Title:
SYSTEM ADAPTING WAVE LENGTH DIVISION MULTIPLEXING AND OPTICAL POWER CONTROLLER
Document Type and Number:
Japanese Patent JP3720112
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain required power relativity by controlling a parameter on which the power of respective signal light beams relies based on the spectrum of monitored branch light and fixedly holding power relativity.
SOLUTION: The plural optical transmitters 12 of a transmitting station respectively and mutually output signal light beams being different in wave length and an optical multiplexer 18 executes the wave length division multiplexing(WDM) of the signal light beams so as to generate WDM signal light. Then, an optical beam splitter 32 which is connected to the output port of the optical multiplexer 18 in terms of action branches WDM signal light into first and second kinds of light and a spectral monitor 34 monitors the spectrum of the first kind of light in a band adding the wave length of the respective signal light beams. Moreover, a control circuit 36 controls the parameter on which the power of the respective signal light beams relies based on the monitored spectrum, power relativity in WDM signal light is fixedly held and the transmitting station outputs second branch light.
Inventors:
Takafumi Terahara
Application Number:
JP6123196A
Publication Date:
November 24, 2005
Filing Date:
March 18, 1996
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04J14/00; H04B10/077; H04B10/079; H04B10/25; H04B10/293; H04B10/294; H04B10/297; H04B10/40; H04B10/50; H04B10/516; H04B10/564; H04B10/572; H04B10/60; H04B10/67; H04J14/02; (IPC1-7): H04J14/00; H04B10/04; H04B10/06; H04B10/14; H04B10/26; H04B10/28; H04J14/02
Domestic Patent References:
| JP7077627A | ||||
| JP8321824A | ||||
| JP7154367A | ||||
| JP7030520A | ||||
| JP5218975A | ||||
| JP5327662A | ||||
| JP6112905A | ||||
| JP6069891A | ||||
| JP62090042A | ||||
| JP1015179B2 |
Attorney, Agent or Firm:
Akira Matsumoto