Title:
WAVELENGTH CONVERTER AND WAVELENGTH CONVERSION METHOD
Document Type and Number:
Japanese Patent JP3439345
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wavelength converter which efficiency converts a wavelength, decreases the wavelength chirping of an output signal and is applicable to the signal exchange between the communication channels in WDM communication and a wavelength conversion method.
SOLUTION: Input light signal pulses are respectively inputted to a first nonlinear waveguide 24 and a second nonlinear waveguide 25 where refractive indicds change according to the input light signal pulses by imparting a time difference of 0.6 to 1.2 times the pulse width of the input light signal pulses and continuous light of a prescribed wavelength is inputted thereto, respectively. The phase of the optical signal outputted from the second nonlinear waveguide 26 is regulated to a prescribed quantity with respect to the phase of the optical signal outputted from the first nonlinear waveguide 24. Thereafter the optical signal outputted from the first nonlinear waveguide 14 and the optical signal outputted from the second nonlinear waveguide 25 are multiplexed. The wavelength-component of the input light signal pulses is removed from the multiplexed optical signal, by which the output light signal pulses of the wavelength different from the input light signal pulses are outputted.
Inventors:
Yoshiyasu Ueno
Application Number:
JP18265298A
Publication Date:
August 25, 2003
Filing Date:
June 29, 1998
Export Citation:
Assignee:
NEC
International Classes:
G02F2/02; G02F2/00; G02F1/365; H01S5/50; (IPC1-7): G02F2/02
Domestic Patent References:
| JP8179385A |
Other References:
【文献】1997年春季第44回応用物理学関係連合講演会予稿集 第3分冊.P979
Attorney, Agent or Firm:
Masahiko Desk (2 outside)