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Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 1
Describing the optical routing system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Parts of the optical routing system | 18 |
Gigabit interface converter description | 18 |
Optical add drop multiplexer description | 19 |
Network add/drop ring application | 20 |
Optical multiplexer/demultiplexer description | 21 |
CWDM | 22 |
CWDM | 22 |
CWDM OMUX in a | 23 |
CWDM OMUX in a ring application | 24 |
Chapter 2
Calculating transmission distance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
About transmission distance and optical link budget | 27 |
How to calculate expected loss budget | 28 |
How to calculate maximum transmission distance | 28 |
Assumptions | 28 |
Procedure | 29 |
29 | |
Mesh ring transmission distance | 30 |
Hub and spoke transmission distance | 33 |