| Patent Number |
Title Of Patent |
Date Issued |
| 7106978 |
Optical module, optical transmission apparatus, WDM optical transmission device, and method for |
September 12, 2006 |
| An optical module according to the present invention includes: a light-emitting device that outputs laser light; a temperature adjustment unit that adjusts a wavelength of the laser light outputted from the light-emitting device so as to be locked at a predetermined wavelength; a wav |
| 6914921 |
Optical filter, laser module, and wavelength locker module |
July 5, 2005 |
| On a second thermo-module there are disposed a prism, an optical filter, and a sub-mount, via a base respectively. On the front side of the sub-mount, there are disposed a first photodetector and a second photodetector. The optical filter is structured with a crystal member that sati |
| 6856475 |
Optical module having temperature adjustment features |
February 15, 2005 |
| An optical module of the present invention can stabilize e.g. the temperature of a wavelength monitor portion so that the oscillating wavelength of a laser diode is stabilized. The laser diode and the wavelength monitor portion for monitoring the wavelength of the laser diode are inc |
| 6822986 |
Method of controlling a wavelength of a semiconductor laser, optical module, optical transmitter |
November 23, 2004 |
| An optical module includes a light-emitting device that outputs laser light, a temperature detection unit that is arranged in proximity to the light-emitting device and detects the temperature of the light-emitting device, a wavelength monitor unit that receives laser light outputted fro |
| 6807208 |
Laser module |
October 19, 2004 |
| An optical filter is provided on a first thermo-module whose temperature is controlled to be constant, via a base. Accordingly, a wavelength discrimination characteristic of the optical filter and an optical isolator can be stabilized, thereby realizing more accurate wavelength locki |
| 6765938 |
System for controlling wavelength of laser beam |
July 20, 2004 |
| The present invention provides a system for controlling a wavelength of laser light comprising: a light-emitting device for outputting laser light; means for regulating a temperature of said light-emitting device; a wavelength monitor for receiving the laser light transmitted from said |
| 6724800 |
Wavelength monitor and laser module |
April 20, 2004 |
| A wavelength monitor capable of obtaining an optical detection signal of high quality is proposed. In the wavelength monitor, a light incident surface of an optical filter is disposed with an inclination relative to the light incident direction. With this arrangement, it is possible to |
| 6650667 |
Semiconductor laser apparatus, semiconductor laser module, optical transmitter and wavelength di |
November 18, 2003 |
| A semiconductor laser apparatus comprises a light-emitting portion including a light-emitting device for outputting a laser beam, a light-receiving element for receiving the laser beam outputted from said light-emitting device, a wavelength monitoring portion including an optical sys |
