Title:
光伝送システム、及びキャリア監視装置
Document Type and Number:
Japanese Patent JP7121288
Kind Code:
B2
Abstract:
An optical transmission system includes: first and second optical transmitting units for respectively transmitting first and second optical signals that are obtained, respectively, as a result of first and second frequency-multiplexed multi-channel signals being converted by means of FM batch conversion; a carrier monitoring function unit for monitoring each carrier signal included in the optical signals; an output adjustment unit for adjusting signal intensities of the optical signals and outputting the optical signals; a multiplexer for outputting a multiplexed signal of the optical signals; an amplifier for amplifying the multiplexed signal; and first and second optical receiving units for receiving the respective optical signals included in the amplified multiplexed signal. The output adjustment unit adjusts the respective signal intensities of the optical signals such that the signal intensity at each optical receiving unit is larger than or equal to a predetermined value. The carrier monitoring function unit updates the predetermined values based on a minimum optical sensitivity that is calculated based on the amount of frequency deviation of each carrier signal included in the optical signals.
Inventors:
Takashi Mitsui
Toshiaki Shimoha
Toshiaki Shimoha
Application Number:
JP2019017403A
Publication Date:
August 18, 2022
Filing Date:
February 01, 2019
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04B10/293; H04B10/075; H04J1/00; H04J14/02; H04L27/10
Domestic Patent References:
| JP11355750A | ||||
| JP2016174298A | ||||
| JP200153686A |
Foreign References:
| WO2006009197A1 | ||||
| WO2006051849A1 |
Other References:
柴田宣、他,FM一括変換方式を用いた光映像分配システム,電子情報通信学会論文誌,日本,一般社団法人電子情報通信学会,2000年07月,VOL.J83-B No.7,pp.948-959
Attorney, Agent or Firm:
Patent Attorney Shiga International Patent Office
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