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91. 发明申请

US20030147435A1 Laser diode module 失效
标题翻译：激光二极管模块
公开(公告)号：US20030147435A1
公开(公告)日：2003-08-07
申请号：US10194225
申请日：2002-07-15
申请人： Mitsubishi Denki Kabushiki Kaisha
发明人： Atsushi Sugitatsu , Tatsuo Hatta , Satoshi Tamura
IPC分类号： H01S003/13
CPC分类号： H01S5/02284 , H01S5/0014 , H01S5/0228 , H01S5/02296 , H01S5/0683 , H01S5/147
摘要： A laser diode module includes a laser diode device, an optical device like a single lens placed in front of the laser diode device for reflecting front radiation emitted from a front surface of the laser diode device, and a photodiode placed at the back of the laser diode device and displaced from an optical axis of an optical system which includes the laser diode device, for receiving reflected radiation from the optical device.
摘要翻译：激光二极管模块包括激光二极管器件，类似于放置在激光二极管器件前方的单透镜的光学器件，用于反射从激光二极管器件的前表面发射的前辐射，以及放置在激光背面的光电二极管二极管器件并且从包括激光二极管器件的光学系统的光轴移位，用于接收来自光学器件的反射辐射。

92. 发明申请

US20030123500A1 Optical module 失效
标题翻译：光模块
公开(公告)号：US20030123500A1
公开(公告)日：2003-07-03
申请号：US10319539
申请日：2002-12-16
发明人： Takeshi Fujita
IPC分类号： H01S003/30 , H01S003/13 , H01S003/04
CPC分类号： H01S5/146 , H01S5/02248 , H01S5/0683 , H01S5/147
摘要： An optical fiber that transmits laser beams generated by a laser diode in an optical module is provided with a fiber grating. The fiber grating passes most of the laser beams and reflects some of them to a photodiode provided on the back side of the laser diode. The photodiode also receives scattered laser beams from the laser diode. The photodiode outputs a current equivalent to the amount of received laser beams. An APC circuit controls emission of laser beams by the laser diode based on this current.
摘要翻译：在光学模块中传输由激光二极管产生的激光束的光纤设置有光纤光栅。光纤光栅通过大多数激光束并将其中的一些反射到设置在激光二极管背面的光电二极管。光电二极管还接收来自激光二极管的散射激光束。光电二极管输出等于接收的激光束量的电流。 APC电路基于该电流控制由激光二极管发射的激光束。

93. 发明申请

US20030072523A1 Optical fiber with mirror for semiconductor laser 有权
公开(公告)号：US20030072523A1
公开(公告)日：2003-04-17
申请号：US09974287
申请日：2001-10-10
发明人： Chih-Hsiang Lin , Wen-Yen Hwang , Jun Zheng , Stefan J. Murry , James N. Baillargeon
IPC分类号： G02B006/30 , H01S005/00 , H01S003/08
CPC分类号： H01S5/183 , G02B6/241 , G02B6/4203 , G02B6/4215 , G02B6/424 , H01S3/08059 , H01S5/02284 , H01S5/1221 , H01S5/141 , H01S5/147 , H01S5/423
摘要： A vertical-external-cavity surface-emitting laser (VECSEL) is formed by providing a monolithic portion having a first laser cavity mirror and an active region disposed on the first mirror. The cavity is completed with a second laser cavity mirror, such as a DBR, deposited onto the light-receiving end of an optical device, such as an optical fiber. The DBR-on-fiber-end is mounted with respect to the active region to complete the laser cavity and to provide automatic coupling of the output laser light into the fiber.

94. 发明申请

US20030043454A1 Optical transmission apparatus, semiconductor laser device for use in optical transmission apparatus, and method for manufacturing semiconductor laser device 审中-公开
标题翻译：光传输装置，光传输装置中使用的半导体激光装置及半导体激光装置的制造方法
公开(公告)号：US20030043454A1
公开(公告)日：2003-03-06
申请号：US10227020
申请日：2002-08-21
发明人： YoungDuk Yoon , Takayuki Okazaki , Sakiko Sugihara
IPC分类号： H04B010/12
CPC分类号： H01S3/09415 , H01S3/06754 , H01S3/094003 , H01S5/02208 , H01S5/02284 , H01S5/02438 , H01S5/0287 , H01S5/147 , H01S5/22
摘要： Disclosed are semiconductor laser diodes and laser diode modules for reducing noise in EDFA and TDFA fiber amplifiers, to thereby increase signal bandwidth. A major source of noise is identified as being signal light that is inadvertently coupled from the fiber amplifier to the laser diode, and then returned back to the fiber amplifier as noise. In one aspect of the present invention, the back facet of the laser diode is constructed to achieve a reflectivity to the signal light of 40% or less. In another aspect, an anti-reflective coating is provide on the coupling fiber to the laser diode. A reduction of at least 17 dB in the returned signal is achieved by the present invention.
摘要翻译：公开了用于减少EDFA和TDFA光纤放大器中的噪声的半导体激光二极管和激光二极管模块，从而增加信号带宽。噪声的主要来源被识别为信号光，其不经意地从光纤放大器耦合到激光二极管，然后作为噪声返回到光纤放大器。在本发明的一个方面中，激光二极管的后面被构造成实现40％或更小的信号光的反射率。另一方面，在耦合光纤上提供抗反射涂层至激光二极管。通过本发明实现了返回信号中至少17dB的减小。

95. 发明申请

US20020159693A1 Lensed optical fiber 有权
标题翻译：激光光纤
公开(公告)号：US20020159693A1
公开(公告)日：2002-10-31
申请号：US09915186
申请日：2001-07-24
申请人： JDS Uniphase Corporation
发明人： Edmund L. Wolak , Lei Xu , Robert Lang , Tae J. Kim
IPC分类号： G02B006/32
CPC分类号： H01S5/0683 , G02B6/02052 , G02B6/262 , G02B6/4203 , G02B6/4207 , G02B6/4238 , H01S3/094053 , H01S5/02248 , H01S5/0656 , H01S5/06817 , H01S5/147
摘要： A microlens on the end of an optical fiber has reduced back reflections to a light source, such as a pump laser diode. In a particular embodiment, the microlens is lapped on two radii, at least one of which is offset from the center axis of the fiber, to form a point on the end of the fiber, thus reducing a surface for reflecting light back to the light source. In another embodiment, the microlens is formed with two different side surface angles to accommodate misalignment of the light source to the fiber mount. In another embodiment a Fresnel lens structure on the end of the fiber operates optically as an angled chisel lens.
摘要翻译：光纤端部的微透镜减少了对诸如泵激光二极管的光源的反射反射。在特定实施例中，微透镜在两个半径上重叠，其中的至少一个偏离光纤的中心轴线，以在光纤的端部上形成点，从而减少了将光反射回光的表面资源。在另一个实施例中，微透镜形成有两个不同的侧表面角度以适应光源与光纤安装座的不对准。在另一个实施例中，光纤端部上的菲涅耳透镜结构作为倾斜的凿子透镜光学操作。

96. 发明申请

US20020159488A1 Tracking error suppression and method of reducing tracking error 有权
标题翻译：跟踪误差抑制和减少跟踪误差的方法
公开(公告)号：US20020159488A1
公开(公告)日：2002-10-31
申请号：US09915184
申请日：2001-07-24
发明人： Edmund L. Wolak , Tae J. Kim , Harrison Ransom , Jo Major , Robert Lang
IPC分类号： H01S003/04
CPC分类号： G02B6/4203 , G02B6/02052 , G02B6/262 , G02B6/4207 , G02B6/4238 , H01S3/094053 , H01S5/02252 , H01S5/0656 , H01S5/06817 , H01S5/0683 , H01S5/147
摘要： A laser package comprises a laser diode source having a first Fabry-Perot cavity between a highly reflective back facet and low reflective front facet for providing a first light output for an optical application. A light monitor is positioned adjacent to the back facet and aligned to receive a second light output from the laser diode back facet. A pigtail fiber having a lensed fiber input end is positioned from the laser diode front facet to form an optical coupling region and is aligned relative to the lasing cavity to receive the first light output into the fiber, the light output exiting the package for coupling to the application. A portion of the first light output from the lasing cavity is reflected off the lensed fiber input end with a portion directed back into the lasing cavity and another portion reflected off of the laser diode front facet. The front facet forms with the lensed fiber input end a second Fabry-Perot cavity generating light which is periodically in and out of phase with the light generated in the first Fabry-Perot cavity due to changes in the length of the second Fabry-Perot cavity caused by package ambient temperature changes so that a tracking error is generated in a signal developed by the light monitor. Thus, this invention provides several ways to suppress the formation of the second Fabry-Perot cavity.
摘要翻译：激光器封装包括激光二极管源，其具有在高反射后面和低反射前面之间的第一法布里 - 珀罗腔，用于为光学应用提供第一光输出。光监控器定位成与后面相邻并对准以接收来自激光二极管背面的第二光输出。具有透镜光纤输入端的辫状光纤从激光二极管前刻面定位，以形成光耦合区域，并且相对于激光腔对准，以将第一光输出接收到光纤中，光输出离开封装以耦合到应用程序。从激光腔输出的第一光的一部分从透镜光纤输入端反射，其中一部分指向激光腔，另一部分从激光二极管前端面反射出去。前透镜与透镜光纤输入端形成第二法布里 - 珀罗腔，其产生光，其由于第二法布里 - 珀罗腔的长度变化而周期性地与第一法布里 - 珀罗腔中产生的光异相和不同相由封装环境温度变化引起的，从而在由光监测器开发的信号中产生跟踪误差。因此，本发明提供了几种抑制第二法布里 - 珀罗腔形成的方法。

97. 发明授权

US06345138B1 Optical fiber output semiconductor device 失效
标题翻译：光纤输出半导体器件
公开(公告)号：US06345138B1
公开(公告)日：2002-02-05
申请号：US09457351
申请日：1999-12-09
申请人： Kiyoyuki Kawai , Ritsuo Yoshida , Masanobu Kimura , Ken Itou , Kazuyoshi Fuse
发明人： Kiyoyuki Kawai , Ritsuo Yoshida , Masanobu Kimura , Ken Itou , Kazuyoshi Fuse
IPC分类号： G02B630
CPC分类号： G02B6/42 , G02B6/26 , G02B6/305 , G02B6/3636 , G02B6/3652 , G02B6/4204 , G02B6/421 , G02B6/423 , G02B2006/12195 , H01S5/146 , H01S5/147
摘要： To obtain an inexpensive, high-power optical fiber output semiconductor device, an edge emitting type semiconductor element, a tapered optical waveguide having a structure for accommodating expansion and contraction due to a change in temperature, and an optical fiber are prepared separately. One edge of the tapered optical waveguide is butt-joined to an output face of the edge emitting type semiconductor element. The other edge of the tapered optical waveguide is connected to the optical fiber.
摘要翻译：为了获得廉价的高功率光纤输出半导体器件，分别制备边缘发射型半导体元件，具有用于容纳由于温度变化引起的膨胀和收缩的结构的锥形光波导和光纤。锥形光波导的一个边缘与边缘发射型半导体元件的输出面对接。锥形光波导的另一个边缘连接到光纤。

98. 发明授权

US5845030A Semiconductor laser module and optical fiber amplifier 失效
标题翻译：半导体激光模块和光纤放大器
公开(公告)号：US5845030A
公开(公告)日：1998-12-01
申请号：US831254
申请日：1997-04-08
申请人： Goro Sasaki , Atsushi Hamakawa
发明人： Goro Sasaki , Atsushi Hamakawa
IPC分类号： G02B6/42 , G02B6/02 , H01S3/067 , H01S3/094 , H01S5/00 , H01S5/022 , H01S5/024 , H01S5/125 , H01S5/14 , G02B6/36
CPC分类号： H01S5/147 , H01S3/094003 , H01S3/094053 , H01S5/02248 , H01S5/02284 , H01S5/02415
摘要： A semiconductor laser module includes a semiconductor laser having an active region between a light-reflecting surface and a light-exit surface thereof, and an optical fiber optically coupled to the semiconductor laser and including an optical fiber diffraction grating. The optical fiber diffraction grating selectively reflects light within a predetermined wavelength band. The wavelength band has a width larger than a wavelength interval of a longitudinal mode of light resonating between the light-reflecting surface and the light-exit surface.
摘要翻译：半导体激光器模块包括在光反射表面和光出射表面之间具有有源区的半导体激光器和与半导体激光器光学耦合并且包括光纤衍射光栅的光纤。光纤衍射光栅选择性地反射预定波长带内的光。波长带的宽度大于在光反射表面和光出射表面之间谐振的纵向光模的波长间隔。

99. 发明授权

US5699377A Narrow linewidth, stabilized semiconductor laser source 失效
标题翻译：窄线宽，稳定的半导体激光源
公开(公告)号：US5699377A
公开(公告)日：1997-12-16
申请号：US640417
申请日：1996-04-30
申请人： Jing-Jong Pan
发明人： Jing-Jong Pan
IPC分类号： G02B6/42 , H01S5/022 , H01S5/14 , H01S3/08 , G02B6/00
CPC分类号： G02B6/0218 , G02B6/4208 , G02B6/4215 , G02B6/424 , H01S5/147 , G02B6/4265 , G02B6/4269 , G02B6/4271 , G02B6/4286 , H01S3/1053 , H01S3/1055 , H01S5/0064 , H01S5/02216 , H01S5/02284 , H01S5/02415 , H01S5/02446
摘要： A semiconductor laser source having a laser diode and a fiber Bragg grating is described. The laser diode has first and second facets from which output light is emitted. A first end of the fiber Bragg grating is located near the second facet to receive output light from the laser diode. The fiber Bragg grating has a very narrow linewidth about a selected wavelength and reflects output light in the selected narrow linewidth back into the laser diode through its second facet. The output light emitted from the first facet has a very narrow linewidth about the selected linewidth.
摘要翻译：描述了具有激光二极管和光纤布拉格光栅的半导体激光源。激光二极管具有从其输出光的第一和第二小平面。光纤布拉格光栅的第一端位于第二面附近以接收来自激光二极管的输出光。光纤布拉格光栅具有围绕所选波长的非常窄的线宽，并将所选窄线宽中的输出光通过其第二面反射回激光二极管。从第一小面发射的输出光线对于所选择的线宽具有非常窄的线宽。

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