Operating System Concepts in Optical Fusion Splicers.

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Operating System Conceptsin Optical Fusion
Splicers.

• Darrin P. Newman
• CSc 4320

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What is Optical Fiber?

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

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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

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Why Optical Fiber?
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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)

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Fiber Splicing

• Fusion Splicing
• Low splice loss
• Long lasting
• Durable

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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
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Operating System Concepts

• Process Management
• Memory Management
• Storage Management
• Protection
• Security

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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.

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Process Management
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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.

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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.

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Protection

• Protection is needed so that user cannot modify
  certain aspects of the splicer
• User menu and Supervisor menu

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Security

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

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Fusion Splicer Demo
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Questions?