Title:
WAVELENGTH TUNABLE MODE SYNCHRONOUS LASER, WAVELENGTH CONVERTER, AND TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JP3515741
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To arbitrarily change the corresponding property between the frequency and oscillation wavelength of a clock signal.
SOLUTION: In the resonator of a wavelength tunable mode synchronous laser to which the clock signal corresponding to a prescribed wavelength is inputted, an array waveguide grating that generates output signals of oscillation wavelengths each of which has an independent propagation delay at arbitrary wavelength intervals not relying upon the wavelength corresponding to the clock signal is provided. A transmitter which generates a transmitting signal having a fixed transmission rate by setting the frequency of the clock signal of the synchronous laser sufficiently higher than the transmission rate and a wavelength converter are constituted. The wavelength converter the output wavelength of which is set by extracting the clock signal of the laser from an inputted information signal and a wavelength router are constituted. In addition, a transmission system having a receiver that extracts the envelope of the transmitting signals is constituted by using the transmitter and wavelength converter.
Inventors:
Tamura, Koichi Robert
Nakazawa, Masataka
Komukai, Tetsuo
Nakazawa, Masataka
Komukai, Tetsuo
Application Number:
JP2000229925A
Publication Date:
April 05, 2004
Filing Date:
July 28, 2000
Export Citation:
Assignee:
NIPPON TELEGR & TELEPH CORP <NTT>
International Classes:
G02F1/01; G02F2/02; H01S3/083; H01S3/098; H01S3/115; H04B10/00; H04B10/516; H04B10/61; H04J14/00; H04J14/02; (IPC1-7): H01S3/098; G02F2/02; H04B10/04; H04B10/06; H04B10/142; H04B10/152; H04J14/00; H04J14/02
Attorney, Agent or Firm:
谷 義一 （外１名）