Method and an improved device for controlling the power...

Details Method and an improved device for controlling the power... Method and an improved device for controlling the power...

2007-07-24

2007-07-24

Phan, Hanh (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S017000, C398S019000, C398S025000, C398S026000, C398S027000, C398S033000, C398S034000, C398S045000, C398S048000, C398S050000, C398S056000, C398S079000, C398S081000, C398S082000, C398S083000, C398S093000, C398S094000, C398S095000, C398S147000, C398S158000, C398S159000, C398S177000, C398S181000, C398S148000, C385S024000, C385S037000, C385S016000, C385S017000, C385S018000

Reexamination Certificate

active

10742786

ABSTRACT:
A device (D) is dedicated to controlling the power of optical signals in a transparent switching node of an optical communication network that switches bands of wavelengths. The device includes, firstly, a controller (12) for comparing input optical power measurements to a selected first threshold and generating instructions representative of the comparison result, secondly, a measuring device (10A) for delivering measurements representative of the input optical power of the optical signals at one output at least of the switch (4), and thirdly, a processor between the switch (4) and the multiplexer (6) of the node and which control the optical power of the signals coming from the switch (4) as a function of the instructions they receive, so that the optical power of the signals at the input of the multiplexer (6) is maintained substantially constant.

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patent: 6426817 (2002-07-01), Tomita
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