Title:
半導体レーザ装置
Document Type and Number:
Japanese Patent JP4069111
Kind Code:
B2
Abstract:
Arrayed DBR (Distributed Bragg Reflector) laser shows a problem that spectrum purity is deteriorated when a current is flowed in a semiconductor optical amplifier for attaining a sufficient optical output. In addition, the arrayed waveguide grating laser shows a problem that the spectrum purity is deteriorated by leakage of light. An output end of each of the laser channels is provided with a gate (a core) that can be controlled through bias application. The gate has a function for amplifying light when the laser channels are operated and for absorbing light when the laser channels are not operated.
Inventors:
Arimoto Hideo
Application Number:
JP2004334676A
Publication Date:
April 02, 2008
Filing Date:
November 18, 2004
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01S5/026; H01S5/50
Domestic Patent References:
| JP2004055647A | ||||
| JP2003078209A | ||||
| JP2002270972A | ||||
| JP10221550A |
Attorney, Agent or Firm:
Katsuo Ogawa
Kyosuke Tanaka
Takashi Sasaki
Kyosuke Tanaka
Takashi Sasaki