Title:
OPTICAL MODULATION DEVICE AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2002116419
Kind Code:
A
Abstract:
To provide an optical modulation device in which even when the number of wavelength increases, the optical gain of each wavelength does not decrease, the wavelength to be used is not limited by the nonlinear optical effect, the output level can be controlled for each wavelength, and increase in the noise figure or generation of the pattern effect are prevented.
The device has a semiconductor optical amplifier(SOA) 11 and an optical modulator 12. By disposing the optical modulator at the post stage of the semiconductor optical amplifier 12, CW light at single wavelength λ1 is first optically amplified by the semiconductor optical amplifier 11 and then modulated by the optical modulator 12.
More Like This:
Inventors:
ASAKA KOUTA
SUZAKI YASUMASA
OGASAWARA MATSUYUKI
SUZAKI YASUMASA
OGASAWARA MATSUYUKI
Application Number:
JP2000307174A
Publication Date:
April 19, 2002
Filing Date:
October 06, 2000
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G02F1/015; G02F1/017; H01S5/026; H01S5/50; (IPC1-7): G02F1/015; G02F1/017; H01S5/026; H01S5/50
Attorney, Agent or Firm:
Toshiro Mitsuishi (2 outside)
Previous Patent: MULTISTAGE OPTICAL MODULATION DEVICE
Next Patent: METHOD AND DEVICE FOR GENERATING LIGHT PULSE
Next Patent: METHOD AND DEVICE FOR GENERATING LIGHT PULSE