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1. 发明授权

US5025448A Method and apparatus for stabilizing frequency of semiconductor laser 失效
标题翻译：稳定半导体激光器频率的方法和装置
公开(公告)号：US5025448A
公开(公告)日：1991-06-18
申请号：US492716
申请日：1990-03-13
申请人： Shoichi Sudo , Yoshihisa Sakai , Hiroshi Yasaka , Tetsuhiko Ikegami , Yuzo Yoshikuni , Itaru Yokohama , Kenichi Kubodera
发明人： Shoichi Sudo , Yoshihisa Sakai , Hiroshi Yasaka , Tetsuhiko Ikegami , Yuzo Yoshikuni , Itaru Yokohama , Kenichi Kubodera
IPC分类号： G02B6/26 , G02B6/42 , H01S5/022 , H01S5/0683 , H01S5/0687 , H01S5/40 , H04B10/50 , H04B10/572
CPC分类号： H04B10/572 , G02B6/262 , G02B6/4204 , H01S5/0687 , H04B10/503 , H01S5/02284 , H01S5/0683 , H01S5/4031
摘要： A method of stabilizing the frequency of a semiconductor laser comprises stabilizing a time-dependent frequency fluctuation by utilizing an optical energy absorption medium including an isotope acetylene gas molecule. An apparatus for stabilizing the frequency of a semiconductor laser, comprises a semiconductor laser, an optical energy absorption medium, a photodetector and a control circuit as essential elements. The optical energy absorption medium includes an isotope acetylene molecule.

2. 发明申请

US20070041415A1 WAVELENGTH TUNABLE DISTRIBUTED BRAGG REFLECTOR (DBR) LASER 审中-公开
标题翻译：波长分布式分布式反射器（DBR）激光器
公开(公告)号：US20070041415A1
公开(公告)日：2007-02-22
申请号：US10555156
申请日：2005-03-23
申请人： Naoki Fujiwara , Nobuhiro Nunoya , Nobuhiro Kikuchi , Yasuo Shibata , Hiroshi Yasaka
发明人： Naoki Fujiwara , Nobuhiro Nunoya , Nobuhiro Kikuchi , Yasuo Shibata , Hiroshi Yasaka
IPC分类号： H01S5/00
CPC分类号： H01S5/06256 , H01S5/125
摘要： The present invention is to provide a wavelength tunable DBR laser having the wider wavelength tuning characteristic, able to attain a 6 nm or more continuous wavelength shift and also higher in output power than a conventional wavelength tunable DBR laser. The DBR laser is constituted such that optical waveguides formed on a substrate, comprising an active region optical waveguide 22 having a light emitting function and passive region optical waveguides 23a and 23b provided on both ends of the active region 22, these passive region optical waveguides 23a and 23b have anterior and posterior DBR regions 24 and 29 with a wavelength tuning function, a posterior DBR region 29 is provided with a diffraction grating whose length is 95% or more in a saturated effective length value, and an anterior DBR region 24 whose length is shorter than the above length to take out the emitting light.
摘要翻译：本发明是提供一种波长可调谐的DBR激光器，其具有比常规的波长可调DBR激光器更宽的波长调谐特性，能够实现6nm或更大的连续波长漂移以及更高的输出功率。 DBR激光器被构造成使得形成在基板上的光波导包括具有发光功能的有源区光波导22和设置在有源区22的两端的无源区光波导23a和23b，这些无源区光波导23a和23b具有波长调谐功能的前后DBR区24和29，后DBR区29设置有在饱和有效长度值中长度为95％或更大的衍射光栅，前DBR 区域24的长度比上述长度短以取出发光。

3. 发明授权

US5155737A Semiconductor wavelength conversion device 失效
标题翻译：半导体波长转换器件
公开(公告)号：US5155737A
公开(公告)日：1992-10-13
申请号：US788784
申请日：1991-11-06
申请人： Masahiro Ikeda , Osamu Mikami , Hiroshi Yasaka , Mitsuru Naganuma , Shingo Uehara , Katsuhiko Kurumada
发明人： Masahiro Ikeda , Osamu Mikami , Hiroshi Yasaka , Mitsuru Naganuma , Shingo Uehara , Katsuhiko Kurumada
IPC分类号： G02F3/02 , H01S3/1055 , H01S5/06 , H01S5/0625
CPC分类号： G02F3/026 , H01S3/1055 , H01S5/0609 , H01S5/06256
摘要： A wide band distributed Bragg reflector having a reflectivity extremely greater than that of a narrow band distributed Bragg reflector mirror portion on the output side of a bistable type wavelength conversion device is arranged on the incident side. The input light in TM polarization mode is used as an input signal light and the wavelength conversion is performed by tuning the narrow band distributed Bragg reflection mirror portion on the output side from which an output light in TE polarization mode outgoes perpendicularly to the input light. The input signal light and the output signal light are polarized in such a manner that they are perpendicular to one another and, therefore, the device can be realized as a one-directional device. The use of any isolator is not required.

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