Title:
MONITOR METHOD FOR OPTICAL SUBMARINE REPEATER
Document Type and Number:
Japanese Patent JP3897954
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that a conventional optical submarine repeater has a complicated configuration of the repeater because a land side device transmits monitor information of a monitor control circuit on the basis of a command via a signal line resulting in needing the control circuits such as an analog/digital converter and a CPU.
SOLUTION: A superimposed current 12 consisting of a feed current 14 and a low frequency current 15 is supplied to feed sections 8a-8n, the superimposed current 12 modulates a stimulation light source 6 to modulate a main signal sent through the signal line 2 on the basis of an output of the stimulation light source 6, and the land side device 10 measured the modulated component to discriminate deterioration in the stimulation light source 6.
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Inventors:
Nakaoka Masayoshi
Application Number:
JP2000158694A
Publication Date:
March 28, 2007
Filing Date:
May 29, 2000
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01M11/00; H04B10/07; H04B10/077; H04B10/079; H04B10/29; H04B10/291; H04B10/54; H04B10/80; (IPC1-7): H04B10/08; G01M11/00; H04B10/17; H04B10/16
Domestic Patent References:
| JP7038471A | ||||
| JP4293025A | ||||
| JP7131420A |
Attorney, Agent or Firm:
Hiroaki Tazawa
Konobu Kato
Hideaki Tazawa
Hamada Hatsune
Konobu Kato
Hideaki Tazawa
Hamada Hatsune