Title:
周波数多重信号の光伝送システム
Document Type and Number:
Japanese Patent JP4028942
Kind Code:
B2
Abstract:
A detector outputs a detection signal indicating amplitude variation of an input frequency-multiplexed signal. An amplitude controller adjusts the amplitude of the frequency-multiplexed signal by referring to the detection signal. A modulator modulates the amplitude-adjusted frequency-multiplexed signal to produce a predetermined modulated signal. A second multiplexer multiplexes the modulated signal and the detection signal to produce a multiplexed signal. An optical transmitter converts the multiplexed signal into an optical signal, and then sends it out to an optical transmission path. An optical receiver converts the received optical signal into an electrical signal. A separator separates the modulated and detection signals from the electrical signal. A demodulator demodulates the modulated signal to output the frequency-multiplexed signal. An amplitude adjuster adjusts the amplitude of the frequency-multiplexed signal by referring to the detection signal to reproduce the original amplitude variation.
Inventors:
Yu Fuse
Application Number:
JP16664599A
Publication Date:
January 09, 2008
Filing Date:
June 14, 1999
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04B3/04; H04J1/00; H04B10/07; H04B10/2507; H04B10/548; H04B10/564; H04B10/58; H04B15/00; H04J14/02; H04L27/26
Domestic Patent References:
| JP8046595A | ||||
| JP9130364A | ||||
| JP10163975A | ||||
| JP8018537A | ||||
| JP7131425A | ||||
| JP9214436A | ||||
| JP8204635A | ||||
| JP10065634A |
Attorney, Agent or Firm:
Shiro Ogasawara