Operating System Conceptsin Optical Fusion Splicers.

Darrin P. Newman

CSc 4320

What is Optical Fiber?

Optical fiber is basically a wire that is made of glass instead of copper.

Why use Optical Fiber?

Higher speed- 2.5Gb/s vs 1.5 Mb/s Signal strength -200Km vs 2.5 Km Security EMI- (electromagnetic interference) Capacity- 32,000 channels vs 24 channels

Why Optical Fiber?

Fiber Splicing

Mechanical Splicing– Butt fibers together with matching gel in between

fibers.– Requires high skill level – High splice loss (0.5 dB)– Degradation over time (2-5years)

Fiber Splicing

Fusion Splicing– Low splice loss– Long lasting– Durable

Optical Fiber Splicing

dB Power Out as a % of Power In % of Power Lost dB Power Out as a % of Power In % of Power Lost

1 79% 21% 13 5% 95%

2 63% 37% 14 4% 96%

3 50% 50% 15 3.20% 96.80%

4 40% 60% 16 2.50% 97.50%

5 32% 68% 17 2% 98%

6 25% 75% 18 1.60% 98.40%

7 20% 80% 19 1.30% 98.70%

8 16% 84% 20 1% 99%

9 12% 88% 25 0.30% 99.70%

10 10% 90% 30 0.10% 99.90%

11 8% 92% 40 0.01% 99.99%

12 6.30% 93.70% 50 0.00% 100.00%

Operating System Concepts

Process Management Memory Management Storage Management Protection Security

Process Management

In early versions process management was not very critical because of basic structure of system.

Recently as new OS was launched noticeable problem has been response time.

Process Management

Memory management

Due to small size of OS this was not an issue When PM splicer was introduced, previous

machine version was upgraded causing memory to be full.

To remedy problem, several options had to be removed.

Storage management

Storing of data is different than computer– Each compartment for storing data is fixed– Program storage, splice history, arc check history

and images can only be stored in fixed location with a fixed size.

Protection

Protection is needed so that user cannot modify certain aspects of the splicer

User menu and Supervisor menu

Security

To protect from unauthorized users. To protect if machine is stolen.

Fusion Splicer Demo

Questions?