Optical Handhelds Datasheet

7/27/2019 Optical Handhelds Datasheet

1/12

Acterna optical handheld testersOptical power meters, attenuators, light sources


2/122

OMK-9 three wavelengths loss test kit

provides a complete solution for installers

and service providers who need to testsingle-mode fibers at wavelengths

1310, 1550 and 1625 nm.

Speeding-up the

test process

The Acterna TWINtestfeature doubles

the measuring speed for dual-wave-

length tests. Light source and optical

power meter synchronize automatically

and loss test results for both wave-

lengths are displayed on the power

meter.

The Auto-lambda mode sets and

detects the wavelength automatically,

preventing the possibility of measure-

ment errors caused by incorrect

settings.

Meeting test needs today and tomorrow

Acterna's comprehensive range of

handheld instruments and accessories

offers a complete solution for optical

field test. The range includes light

sources, power meters, attenuators

and complete test kits for every

application from laboratory testing

to commissioning and service.

A range of accessories including

adapters, cleaning tools and inspection

microscopes is also available.

Maximizing return on investment and

Keeping operating costs down

Acterna has been a pioneer in optical

handheld instrumentation for more

than 20 years with products which

are recognized worldwide for their

quality, reliability, ease of use and

low cost of ownership.

Acterna's range of handheld field test

kits and instruments is designed for

accuracy where it counts out in the

field.

All the Acterna fiber optic handheldtesters are calibrated to traceable

national standards, with a re-calibration

interval of three years, for long-term,

cost-effective reliability.

The rugged, shock resistant and

splash proof design protects the

instruments against damage in the

field and is designed to withstand

even the harshest treatment.

Operating costs are reduced through

the use of universally available

standard AA mignon batteries (dry

cells or re-chargeable) for up to

130 hours operating time. Battery

replacement in the field is quick and

easy.

The intuitive graphical user interface

ensures that all the instruments are

easy to use without the need for

lengthy training.


3/123

Universal battery supply

Acterna handheld instruments use

standard AA mignon batteries drycells or re-chargeable for up to

130 hours operating time. Battery

replacement in the field is quick and

easy.

Windows-based software

allows Acterna's high performance

handheld instruments to be controlled

remotely, via the RS232 interface.

Test results can be transferred for

analysis and reporting. Data logging

parameters, including interval set-

tings, thresholds and start/stop can

be set remotely.

From physical layer test to system commissioning

Productivity is increasingly an issue in

installation and maintenance of fiber

optic networks. Speed and efficiencyin the field is key to maintaining quality

of service. That is why, for installers

and operators worldwide, Acterna

handhelds are the instruments of

choice.

The range includes instruments and

accessories for testing single mode

and multi-mode fibers in datacom and

telecom networks. High power meters

are ideal for dense wave division

multiplexing (DWDM) systems and for

CATV applications. Sensitive versions

of the instruments detect extremely

low power and long distance loss

test.

Handy pocket-sized versions are ideal

for everyday tasks. High performance

models offer additional features formore demanding applications.

Acterna's high

performance series

Acterna's high performance handheld

instruments combine high functionality

with straightforward operation and

compact design. The series offers

a wide dynamic range, coupled

with laboratory accuracy for reliable

measurement time after time.

Automated test procedures, data

logging, and PC-analysis software

ensure high productivity for field test

and office-based analysis of results.

OMK-19c high performance test kit

offers high power testing up-to

30 dBm for installation and servicingof DWDM, CATV/multimedia and

telecom systems.


4/124

OMK-6 is an optical test kit including handy

pocket sized ins truments for use anywhere as

an everyday tool. It is easy to use and is idealfor a wide range of sin gle mode universal

telecom applications

Acterna's pocket-sized series

Acterna's pocket-sized handhelds

provide high accuracy measurement

in a simple, entry-level unit at anattractive price. Just 3.9 inches long,

these handy instruments provide all

the basic functionality needed for

fiber optic power and loss testing.

Straight-forward three-button oper-

ation and rugged design make them

ideal for a wide range of installation

and maintenance applications.

Innovation by design

Performing tests in the field can be

tricky. Technicians may need to work

in inclement weather or other difficult

conditions while being pressured for

time especially in repair work or

where schedules are tight.

Innovative measurement features,

designed to help preserve the integrity

of the field test procedures and speed

the process, differentiate the Acterna

range. Rugged design, built-in shock

absorbers, and a lengthy battery life

ensure long-term reliability.

Acterna's universal push pull adapter system matches all

common connector types


5/125

OLC-65 the new premium class of optical handhelds

The Optical Level controller OLC-65 is

part of a new generation of fiber optic

testers. As industries first instrument

it combines an optical power meter

and a motor driven optical attenuator

in one compact handheld housing.

Together with a powerful controller

and its remote capabilities the OLC-65

offers a whole range of applications for

maintenance and system verification

tests.

Standard power meter

80 dB dynamic

In-line power meter

in service power control

Level Actenuator

set output power level instead of

set attenuation

Standard Attenuator

simulate link loss

margin tests

Level Controller

active stabilization of drifting input

power

Showing different operation modes of OLC-65

Optical Tx

Test Pattern

OLC-65

Electrical Rx

Rx Under Test

ONT-50

OTN Module

2.5/2.7G FEC

General test setup for receiver sensitivity testing


6/126

Optical power meters

Requirements for standard, all-haul and high power applications

Measurement sensitivity

Secondary to wavelength range,

measuring range is often a deciding

factor when purchasing an optical

power meter. Sensitivity is an impor-

tant criterion for measurements at the

end of the fiber link, where very low

levels need to be recorded. However,

measurement sensitivity should

always be seen in connection with the

uncertainties allowed for the powermeter at these points. This is often

impossible if only the `good' calibra-

tion error is specified. For measure-

ments at the start of the fiber link or

directly downstream of an optical

amplifier, it is essential for the photo-

diode to be designed to withstand the

high optical power levels.

Since the ambient conditions normally

vary during operation, temperature

sensitivity plays an important role.

The internal resistance of the photo-

diode is reduced as the ambient tem-

perature rises.This leads to parasitic

currents (dark current), which mutilate

the actual signal. At the same time,

no benefit can be gained from a high

internal resistance in the photodiode

if, parallel to this diode resistance,

the surface resistance of the printed

circuit board drops to a critical value

as a result of moisture. The area

around the input amplifier thus needs

special protection. This is the only

way to ensure that very low levelsdown to approximately 80 dBm can

be recorded reliably in the long term.

Acterna's experience is a guarantee

for mature and reliable designs. An

alignment procedure (zeroing) can be

carried out if required, in order to

reduce the dark current to a minimum.

This is particularly advisable if low

levels have to be measured at widely

fluctuating temperatures.

Reference measurement and

measurement accuracy

The power meters must be calibrated

at the standard wavelengths, in order

to ensure that the measurements are

comparable and repeatable.

This is handled by the manufacturer

with the aid of a reference standard.

A very accurately specified optical

level can be derived from the nationalstandard thanks to the traceability of

the measurements. Accuracies of

+3% (+0.13 dB) can be achieved for

optical power meters in this way.This

value only applies under reference

conditions such as level and

temperature, and is often cited on the

manufacturer's specification sheet.

The user, however, measures under a

wide range of operating conditions.

Characteristic data that covers this

complete range is essential.

Figure 1: Optical power meter linearity alignment

Acterna specifies the non-linearities of all optical power meters for the

complete measurement range. All the instruments are aligned individually

prior to delivery. They also incorporate a ZER OING function (dark current

alignment), which ensures that their measurement accuracy remains

constant even under extreme temperature conditions.

dP/dB

0.2

0

0.2

0.4 60 40 20 0 20

23C 45C Power/dBmFigure 2: Spectral characteristic of detectors

Photodiodes are used for conversion.They have different spectral

characteristics, depending on the type of semiconductor. Silicon (Si) can

only be used in the first optical window. Germanium (Ge) and indium

gallium arsenide (InGaAs) diodes, on the other hand, are also suitable for

broadband signaling in the second and third optical window, where their

sensitivity is greatest. Ge diodes, which are used as a low-cost variant in all

three windows, are the most sensitive to temperature. Choosing the

correct wavelength and a sufficiently large dynamic range for the optical

laser source and receiver are crucial to the precision of the measurement

results.

Sl(A/W)

1.0

0.5GE (0C)

GE (23C)

InGaAs

= Values stored in the EPROM of the power meter

Si

850 1300 1550 l (nm)


7/127

Spectral characteristics of detectors

Power meters for datacom and tele-

com applications all use photodiodes

for light to current conversion. They

have different spectral characteristics,depending on the type of semi-

conductor. Silicon (Si) can only be

used in the first optical window up to

1000 nm, whereas Germanium (Ge)

and Indium Gallium Arsenide (InGaAs)

diodes are suitable for broadband

detection in the second and third

optical windows up to 1700 nm,

where their sensitivity is greatest.

Ge diodes are the best compromise

for standard applications as they

cover a broad spectral range, are

quite sensitive, and competitively

priced. InGaAs photodiodes are

more expensive but offer superior

performance particularly at higher

wavelengths (41500 nm).

All photodiodes are wavelength

dependant so it is essential to verify

the meter is set to the correct system

wavelength according to factory

calibration. With an Acterna testsource, wavelength setting is simple.

The source sends out an identification

signal which is received by the meter

and processed to set the right

wavelength correction (Auto-Lambda

mode).

One frequently overlooked aspect

of optical power measurements is

the fact that the device under test

(DUT) may deviate from its nominal

wavelength. Consequently, measure-

ment errors are relevant not only

at the standard wavelengths, but

also within windows of+20 nm, for

example.

High power measurement on systems

with optical amplifiers (DWDM, CATV)

Power meters used for measurements

on these systems must be capable

of processing high input levels.Power meters for high levels must be

designed for reliable long term

operation. It is important to note that

+30 dBm represents a power of one

Watt which also creates a challenge

with respect to heat sinking. As a

result, over sensitive instruments can

be damaged beyond repair.

Launching without multiple

reflections

The test adapters of Acterna's optical

power meters are based on the

common fiber-air-sensor interface'

principle. A reflection trap in the

adapter of the power meter prevents

possible multiple reflections between

the reflective plug end surface and the

photodiode from falsifying measure-

ment results. Constant measurement

accuracy is thus guaranteed, regard-

less of the reflectivity of the plug end

surface (material, surface quality).

Figure 3a:

Launching without multiple reflections

Without a reflection trap,

reflected light components

are measured repeatedly

Figure 3b:

Launching with multiple reflections

If a reflection trap is used,

the diode measures the

exact light component

The test adapters of optical power meters

from Acterna are based on the common

fiber-air-sensor interface principle.

A reflection trap in the adapter of the Acterna

power meter prevents possible multiple

reflections between the reflective plug end

surface and the photodiode from

falsifying measurement results. Constant

measurement accuracy is thus guaranteed,

regardless of the reflectivity of the plug end

surface (material, surface quality).


8/128

Optical light sources

Requirements for measurement applications

Light emitting diodes (LEDs) and laser

diodes (LDs) are used as optical

sources. Due to their different physical

parameters, they also have different

coupling methods and applications.

LED sources

The light of the LED, with its wide,

large-area radiation characteristic, is

adjusted to the fiber diameter and

aligned by means of a microlensbonded inside the casing. The coupling

to the measuring or system cable is

contactless via an air gap in the

connector. The main advantages of

LED sources, which are only used in

local area network (LAN) installations,

are their low production cost, easy

alignment to multi-mode fibers and

low sensitivity to temperature.

Laser sources

Compared with LED sources, laser

diodes (LDs) have a smaller, lobe-

shaped radiation profile and a higher

output power.They are, however, more

sensitive to temperature variations

and are particularly suited for single

mode fibers, which have a much

smaller core than multi-mode fibers.

The light is launched by fastening a

fiber section directly in front of thelaser chip.This process is complex,

but guarantees close tolerances. The

pigtailed LD-module is connected to

the output connector. Thus, easy

cleaning of the connector end sur-

faces is vital. Laser sources offer a

sufficiently high output level for the

dynamic ranges required in long-haul

networks.

Figure 4b: Direct coupling to the fiber

Direct coupling fiber to fiber, e.g. (OLS-6)

Usual with LDs

Coupling by physical contact

Extremely precise adapter required

(tolerance50.5 mm)

Light cone spills

over connected fiber

Air

FiberN.A.

Figure 4a: Indirect coupling to the fiber

Indirect coupling via a lens (OLS-5)

Usual with LEDs

Injected power dependent on

numerical aperture (N.A.) of fiber

LD

Figure 5: Power spectrum of LED and laser sources

S'

15 to 25 dBm

FWHM

100 nm

1300

LED

0 to 10 dBm

FWHM

3 nm

1300

FP Laser Diode

(MLM Laser)

+5 to 10 dBm

551 nm

l (nm)1300DFB Laser Diode

(SLM Laser)


9/129

Stabilised output level

The stability of the source and the

deviation of its output level are more

important for precise loss tests than

the actual power. Since a certain timeelapses between the reference

measurement and the measurement

of the link, the source signal must

remain constant. The temperature

sensitivity of semiconductor light

sources influences both the output

power and the nominal wavelength.

Lasers are much more sensitive to

temperature than LEDs. LED sources

are able to manage with a fixed

compensation factor for the tempera-

ture characteristic, while lasers require

optical feedback. Optical sources

therefore need an optimized correction

principle that also eliminates these

influences and ensures a stabilized

light over a wide temperature range.

Reproducible fiber coupling

Measurement accuracy also depends

to a large extent on the reproducibility

of the fiber coupling at the source

output connector. A rugged mechanicaldesign and casing avoids the

possibility of attenuation damage.

Acterna's universal adapter system

allows the use of different connector

types and enables easy access to the

internal fiber end for easy cleaning.

Dual wavelength operation

All Acterna sources incorporate two

LED or laser sources, with either two

outputs (OLS-6), or one combined

output (OLS-5, OLS-15). The single

output instruments feature the

TWINtestfunction which allows

simultaneous measurements at

1310/1550 nm or 850/1300 nm

without having to disconnect and

reconnect.

TWINtest

TWINtest feature doubles measuring

speed for dual-wavelength tests by

synchronizing light source and power

meter.

Figure 6: Laser source with one optical port for dual-wavelength loss test with TWINtest

OLS OLP

OLP detects wavelength transmited from OLS by

detecting the modulation frequency which is related

to the wavelength used and switches measurement

range automatically. Modulation is also used for

fiber identification.


10/1210

Loss test Adapters and CablesActerna's universal interchangeable adapter system gives

the instruments access to all common fiber optic

connectors in the field. Various adapter cables help toconnect all the different devices under test.

2060 universal test adapters



Fixed Attenuators/Mating sleeves, Single Mode Fixed Attenuators,

K30XX, K31XX test and adapter cables

OLS OLP

Loss test according to IEC 874-1, method 7

Reference measurement (setting the absolute level to

0 dB) similar to method 6 but only one measurement

jumper cable used.

OLS OLP

Loss measurement of connectors:

Method 7 is used to measure patch cables from both ends

OLS OLP

Loss test according to IEC 874-1, method 6

Reference measurement:

This reference measurement need only be performed once

a day, as the long-term stability of the source and receiver

is excellent.

OLS OLP

Insertion loss measurement:

The additional losses can be read off on the power meter

when the device under test (optical fiber cable) is inserted.


11/1211

Acterna ACO FI-11 Optical Fiber I dentifierActerna OVF-1 Pen Sized Visual F ault Locator

Acterna

ACO FBP-S1

Video Inspection

Probe System

Acterna OFI-2000

Related products

Acterna ONT-30

Acterna MTS-8000


12/12

Acterna handheld fiber optic test instrumentsPower meters Wavelengths Dynamic range Application

Pocket-sized

OLP-5 820, 850, 1300, 1550 nm -60 to +5 dB m datacom multi and single mode

OLP-6 780, 850, 1300, 1310, 1550 nm -65 to +10 dBm universal Telecom

OLP-8 980, 1310, 1480, 1550 nm -50 to +23 dBm multimedia/CATV and D WDM

High performance

OLP-15c 780, 850, 1300, 1310, 1550 -70 to +20 dBm universal Telecom

OLP-16c 850, 1300, 1310, 1480, 1510,

1550, 1625 nm

-80 to +15 dBm ultra sensitive power measurement

OLP-18c 850, 980, 1310, 1480, 1510,

1550, 1625 nm

-60 to +26 dBm multimedia/CATV and DWDM

OLP-30c 850, 980, 1310, 1480,

1510, 1550, 1625 nm

-55 to +30 dBm ultra high power measurement

in multimedia/CATV and DWDM

Light sources Wavelengths Output power Application

Pocket-sized

OLS-5 LED, 850, 1300 nm single port -17dBm (62.5/125) datacom mult-imode loss test

OLS-6 FP-LD, 1310, 1550 nm dual port -7 dBm (9/125) universal single mode loss test

OLS-6 FP-LD, 1550, 1625 nm dual port -7 dBm (9/125) 1625 nm loss test, DWDM C+LHigh performance

OLS-15 FP-LD, 1310, 1550 nm single port -7 dBm (9/125) universal single mode loss test

Attenuator Wavelength Range Application

High performance

OLA-15b 1310 and 1550 3 to 60 dB system test for dynamics and margin

Test kits Instruments Range for loss test Application

OMK-5 OLP-5, OLS-5 43 dB (62.5/125) Datacom multi-mode

OMK-6 OLP-6, OLS-6 58 dB (9/125) Telecom

OMK-7 OLP-8, OLS-6 43 dB (9/125) multimedia/CATV and DWDM

OMK-9 OLP-16c, OLS-6 (1310/1550 nm),

OLS-6 (1550/1625 nm)

73 dB (9/125) universal loss test

(three wavelengths)

OMK-14c OLP-15c, OLS-15 63 dB universal Telecom

OMK-15c OLP- 15c, OL S-15, OLA-15b 63 dB unive rsal Te leco m including s ystem

test

OMK-18c OLP-18c, OLS-15 53 dB multimedia/CATV and DWDM

OMK-19c OLP-30c, OLS-15, OLA-15b 48 dB multimedia/CATV and DWDM

including ultra high power

measurement and system test

OMK-30 OLC-65, OLS-15 53 dB universal Telecom including system

test

Acterna AdvantageSM adding value

with global services and solutions

From basic instrument support for

your field technicians to management

of complex, company-wide initiatives,

Acterna's service professionals are

committed to helping you maximizeyour return on investment. Whatever

your needs product support, system

management, education solutions,

tailored test & measurement solutions

or refurbished equipment we offer

programs that will give you the com-

petitive edge. To learn more about how

Acterna can help your business be

more successful, visit the services

section on your local web page at

www.acterna.com.

Acterna is the world's largest provider

of communications test solutions for

telecommunications and cable network

operators. A trusted communications

test partner for more than eight

decades, Acterna offers an unmatched

portfolio of awardwinning instruments,

systems, software and services that

help its customers reduce network

costs while improving performance

and reliability. Headquartered in

Germantown, Maryland, USA with

European and Asia-Pacific operations

based in Eningen, Germany and Hong

Kong Acterna serves nearly every

major communications service provider

and equipment manufacturer around

the world through a skilled sales and

support organization in 31 countries.

Worldwide

Headquarters

One Milestone Center Court

Germantown, Maryland20876-7100

USA

Acterna is present in more

than 80 countries. To find

your local sales office go to:

www.acterna.com

Regional Sales

Headquarters

North America

One Milestone Center CourtGermantown, Maryland

20876-7100

USA

Toll Free: 1 866 ACTERNA

Toll Free: 1 866 228 3762

Tel: +1 301 353 1560 x 2850

Fax: +1301 353 9216

Latin America

Acterna do Brasil Ltda.Av. Eng. Luis Carlos Berrini

936 9th Floor

04571-000 So Paulo

SP-Brazil

Tel: +55 11 5503 3800

Fax: +55 11 5505 1598

Asia Pacific

Acterna Hong Kong Ltd.

Room 4010, 40th Floor

China Resources Building

26 Harbour Road

Wanchai

Hong Kong

Tel: +852 2892 0990

Fax: +852 2892 0770

Western Europe

Acterna Germany GmbHMhleweg 5

72800 Eningen u. A.

Germany

Tel: +49 7121 86 2222

Fax: +49 7121 86 1222

Eastern Europe,

Middle East & Africa

Acterna Austria GmbH

Aredstrasse 16-18

A-2544 Leobersdorf

Tel: +43 2256 65610

Fax: +43 2256 65610-22

Acterna Moscow

Prospect Mira, 26,

stroenie 5

RF-129090 Moscow

Tel: +7 095 937 88 04

Copyright 2004

Acterna, LLC.All rights reserved.

Acterna, Communications

Test and Management

Solutions, and its logo are

trademarks of Acterna,

LLC. All other trademarks

and registered trademarks

are the property of their

respective owners. Major

Acterna operations sites

are IS0 9001 registered.

Note: Specifications,

terms and conditionsare subject to change

without notice.

Documents

Optical Handhelds Datasheet