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41. 发明申请

US20020154665A1 Semiconductor laser device having a diffraction grating on a light reflection side 有权
$Semiconductor laser device having a diffraction grating on a light reflection side$
标题翻译：在光反射侧具有衍射光栅的半导体激光装置
公开(公告)号：US20020154665A1
公开(公告)日：2002-10-24
申请号：US09983175
申请日：2001-10-23
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Masaki Funabashi , Naoki Tsukiji , Junji Yoshida
IPC分类号： H01S005/00 , H01S003/08
CPC分类号： H01S5/125 , H01S3/094003 , H01S3/09415 , H01S5/1021 , H01S5/1039 , H01S5/141 , H01S5/146
摘要： A semiconductor device includes an active layer configured to radiate light, a light reflecting facet positioned on a first side of the active layer, a light emitting facet positioned on a second side of the active layer thereby forming a resonant cavity between the light reflecting facet and the light emitting facet, and a partial diffraction grating having a predetermined length and positioned on a light reflecting side of the resonator. The predetermined length of the partial diffraction grating is selected such that the semiconductor device emits a light beam having a plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum of the semiconductor device. The predetermined length of the partial diffraction grating may be set in relation to a length of the resonant cavity, or in relation to a coupling coefficient of the diffraction grating. The semiconductor device may also include another partial diffraction grating positioned on the light emitting side of the laser device.
摘要翻译：半导体器件包括被配置为辐射光的有源层，位于有源层的第一侧上的光反射小面，位于有源层的第二侧上的发光小面，从而在光反射面和发光面和具有预定长度并位于谐振器的光反射侧的部分衍射光栅。选择部分衍射光栅的预定长度，使得半导体器件发射在半导体器件的振荡波长谱的预定光谱宽度内具有多个纵向模的光束。部分衍射光栅的预定长度可以相对于谐振腔的长度设置，或者相对于衍射光栅的耦合系数来设定。半导体器件还可以包括位于激光器件的发光侧的另一部分衍射光栅。

42. 发明申请

US20020154386A1 Optical transmission system 有权
标题翻译：光传输系统
公开(公告)号：US20020154386A1
公开(公告)日：2002-10-24
申请号：US10085709
申请日：2002-03-01
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Takeshi Hirasawa , Yoshihiro Emori , Soko Kado
IPC分类号： H01S003/00
CPC分类号： H04B10/2916
摘要： An optical transmission system is provided in which a plurality of Raman amplifiers are combined so that the wavelength band of a first Raman amplifier in the form of an upward convex curve including the maximum gain value and the wavelength band of a second Raman amplifier in the form of a downward convex curve including the minimum gain value overlap with each other, and that the wavelength band of the first Raman amplifier in the form of a downward convex curve including the minimum gain value and the wavelength band of the second Raman amplifier in the form of an upward convex curve including the maximum gain value overlap with each other. This arrangement also applies to cases where three or more amplifiers are used. Due to this arrangement, an optical transmission system is realized in which it is possible to attain a reduction in Raman gain flatness without using any means such as an equalizer.
摘要翻译：提供了一种光传输系统，其中组合多个拉曼放大器，使得以包括第二拉曼放大器的最大增益值和第二拉曼放大器的波长带的向上凸曲线的形式的第一拉曼放大器的波长带的形式包括最小增益值的向下凸曲线彼此重叠，并且以包括第二拉曼放大器的最小增益值和第二拉曼放大器的波长带的向下凸曲线的形式的第一拉曼放大器的波长带的形式包括最大增益值的向上凸曲线彼此重叠。这种布置也适用于使用三个或更多放大器的情况。由于这种布置，实现了一种光传输系统，其中可以在不使用诸如均衡器的任何装置的情况下实现拉曼增益平坦度的降低。

43. 发明申请

US20020146050A1 Semiconductor laser device 审中-公开
标题翻译：半导体激光器件
公开(公告)号：US20020146050A1
公开(公告)日：2002-10-10
申请号：US09828144
申请日：2001-04-09
申请人： THE FURUKAWA ELECTRIC Co., Ltd.
发明人： Norihiro Iwai , Masaki Funabashi , Toshikazu Mukaihara , Akihiko Kasukawa
IPC分类号： H01S005/00
CPC分类号： H01S5/12 , H01S5/1231
摘要： A semiconductor laser device comprising a substrate, a resonator overlying said substrate, a waveguide overlying said substrate and optically coupled to said resonator, and a diffraction grating formed on said resonator or said waveguide, said diffraction grating including slits or grooves formed on an Al-oxidized region of an Al-containing oxidized semiconductor layer, said Al-oxidized region being formed by selectively oxidizing Al in said Al-containing oxidized semiconductor layer. In the present invention, the difference between the refractive indices of the layer having the embedded grating and the Al oxide layer becomes larger to increase the coupling constant between laser beams and the grating. The decrease of the cavity length can increase the number of the devices obtainable from a single wafer.
摘要翻译：一种半导体激光器件，包括衬底，覆盖所述衬底的谐振器，覆盖所述衬底并光学耦合到所述谐振器的波导和形成在所述谐振器或所述波导上的衍射光栅，所述衍射光栅包括形成在Al- 所述Al氧化区域通过在所述含Al氧化物半导体层中选择性氧化Al而形成。在本发明中，具有嵌入光栅的层和Al氧化物层的折射率之间的差异变大，以增加激光束与光栅之间的耦合常数。腔长度的减小可以增加从单个晶片获得的器件的数量。

44. 发明申请

US20020134114A1 Device for continuously twisting an optical fiber 有权
标题翻译：用于连续扭曲光纤的装置
公开(公告)号：US20020134114A1
公开(公告)日：2002-09-26
申请号：US09994605
申请日：2001-11-28
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Nobuaki Orita
IPC分类号： C03B037/022
CPC分类号： C03B37/032 , C03B2203/19 , C03B2203/36 , C03B2205/06
摘要： A device for continuously twisting an optical fiber, which can add a sufficient twist to an optical fiber, is provided. Reciprocating rollers reciprocate so that the moving direction would be opposite each other along a center axis of rotation. The optical fiber passes through a gap between the reciprocating rollers and runs in contact with the outer circumferential surface of respective reciprocating rollers in order. Reciprocation of the reciprocating rollers adds a twist to the optical fiber. When null is a contacting angle between the optical fiber and the reciprocating rollers, F is maximum static friction of the optical fiber against the outer circumferential surface of the reciprocating rollers, and T is tension of the optical fiber, the coefficient of friction null between the optical fiber and the outer circumferential surface of the reciprocating rollers is lead from an operational formula of nullnull(1/null)nullIn(F/T). This coefficient of friction is set at a value in a range from not less than 0.6 to not more than 0.9.
摘要翻译：提供一种用于连续扭曲光纤的装置，其可以向光纤增加足够的扭曲。往复滚轮往复运动，使得移动方向沿着中心旋转轴线彼此相对。光纤通过往复运动辊之间的间隙并依次与各个往复运动辊的外圆周表面相接触。往复运动的往复运动辊的往复运动给光纤增加了一个扭曲。当phi是光纤和往复辊之间的接触角时，F是光纤相对于往复辊的外周面的最大静摩擦力，T是光纤的张力，光纤和往复滚轮的外圆周表面从μ=（1 / +）的运算公式引出，在（F / T）中。该摩擦系数设定在0.6以上0.9以下的范围。

45. 发明申请

US20020122646A1 Optical fiber, and dispersion compensator using same, optical transmission line using same and optical transmission system using same 有权
标题翻译：光纤和色散补偿器使用相同，光传输线使用相同，光传输系统使用相同
公开(公告)号：US20020122646A1
公开(公告)日：2002-09-05
申请号：US09956829
申请日：2001-09-21
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Ryuichi Sugizaki , Takeshi Yagi
IPC分类号： G02B006/22 , G02B006/16
CPC分类号： G02B6/03644 , G02B6/02228 , G02B6/02242 , G02B6/02257 , G02B6/02261 , G02B6/29377
摘要： There is provided an optical fiber for flattening a dispersion slope in a transmission wavelength band and suitable for high bit-rate and high capacity WDM transmission in a wide range. In this optical fiber, conditions of 0.8%nullnull1null3.0%, null0.7%nullnull2nullnull0.4%, and 0.2%nullnull3null0.5% are satisfied when a relative refractive index difference of the first core with respect to the clad is set to null1, a relative refractive index difference of the second core with respect to the clad is set to null2, and a relative refractive index difference of the third core with respect to the clad is set to null3. A cable cutoff wavelength lies on a short wavelength side from 1520 nm. Further, relations of S
摘要翻译：提供了一种用于在传输波长带中平坦化色散斜率并适用于宽范围内的高比特率和高容量WDM传输的光纤。在该光纤中，当第一个光纤的相对折射率差异为0.8％时，满足0.8％<= DELTA1 <= 3.0％，-0.7％<= DELTA2 <= -0.4％和0.2％<= DELTA3 <= 0.5％芯子相对于包层被设定为DELTA1，第二芯相对于包层的相对折射率差被设定为DELTA2，第三芯相对于包层的相对折射率差被设定为DELTA3。电缆截止波长位于1520nm的短波长侧。此外，当在特定的波长带内的波长频带为1.5μm的范围宽度不小于20nm的特定设定波长带中，满足S <0和0 <（D / S）<= 200的关系将波长为1.5μm的波长的波长设定为D（ps / nm / km），将色散斜率设定为S（ps / nm2 / km）。

46. 发明申请

US20020118714A1 Heat sink, semiconductor laser device, semiconductor laser module and raman amplifier 审中-公开
标题翻译：散热器，半导体激光器件，半导体激光器模块和拉曼放大器
公开(公告)号：US20020118714A1
公开(公告)日：2002-08-29
申请号：US09984142
申请日：2001-10-29
申请人： THE FURUKAWA ELECTRIC CO., LTD
发明人： Sadayoshi Kanamaru , Toshio Kimura
IPC分类号： H01S003/04
CPC分类号： H01S5/147 , H01S3/302 , H01S5/02208 , H01S5/02236 , H01S5/02248 , H01S5/02268 , H01S5/02284 , H01S5/02415 , H01S5/02438 , H01S5/02476 , H01S5/0683
摘要： At least one bevel is formed on the top of a heat sink on which a semiconductor laser diode is placed, the bevel being sloped from either side of first or second optical system downwardly toward the bottom of the heat sink. Thus, the heat radiation area of the heat sink can be increased without blocking of the laser beam emitted from the semiconductor laser diode and without engagement of the heat sink with the first and second optical systems. As a result, the optical output of a semiconductor laser module using such a semiconductor laser diode can be increased. The semiconductor laser module can be applied to even a pump light source used in Raman amplification and required to have a high-power.
摘要翻译：在其上放置半导体激光二极管的散热器的顶部上形成至少一个斜面，该斜面从第一或第二光学系统的任一侧向下朝向散热器的底部倾斜。因此，可以增加散热器的散热面积，而不会阻挡从半导体激光二极管发射的激光束，而不会使散热器与第一和第二光学系统接合。结果，可以增加使用这种半导体激光二极管的半导体激光器模块的光输出。半导体激光模块可以应用于甚至用于拉曼放大的泵浦光源，并且需要具有高功率。

47. 发明申请

US20020105992A1 Semiconductor optical device and method for fabricating same 失效
标题翻译：半导体光学器件及其制造方法
公开(公告)号：US20020105992A1
公开(公告)日：2002-08-08
申请号：US10044990
申请日：2002-01-15
申请人： The Furukawa Electric Co., Ltd.
发明人： Satoshi Arakawa , Tatsuto Kurobe , Nariaki Ikeda , Takeharu Yamaguchi
IPC分类号： H01S005/00
CPC分类号： H01S5/0265
摘要： A monolithic semiconductor optical device with excellent temperature and modulation characteristics and associated method of manufacturing whereby the device has a semiconductor substrate, a semi-insulating buried heterostructure GaInAsP-based DFB laser; and either a buried ridge type AlGaInAs-based EA or a self aligned structure (SAS) AlGaInAs-based EA modulator.
摘要翻译：具有优异的温度和调制特性的单片半导体光学器件及相关的制造方法，其中器件具有半导体衬底，基于半绝缘掩埋异质结构的基于GaInAsP的DFB激光器; 以及基于埋地脊型AlGaInAs的EA或基于AlGaInAs的自调整结构的EA调制器。

48. 发明申请

US20020100911A1 Semiconductor optical device having reduced parasitic capacitance 审中-公开
标题翻译：具有降低的寄生电容的半导体光学器件
公开(公告)号：US20020100911A1
公开(公告)日：2002-08-01
申请号：US09940896
申请日：2001-08-29
申请人： The Furukawa Electric Co., Ltd.
发明人： Satoshi Arakawa , Nariaki Ikeda , Takeharu Yamaguchi
IPC分类号： H01L027/15
CPC分类号： B82Y20/00 , G02F1/017 , G02F1/025 , G02F2201/066 , H01S5/0265 , H01S5/0282 , H01S5/2275
摘要： A semiconductor optical device includes a mesa stripe having a layer structure, a pair of current blocking layers abutting and covering respective sides of the mesa stripe, a pair of Al-oxidized layers each covering one of the current blocking layers, a p-side electrode in contact with the top surface of the mesa stripe through the opening formed between the Al-oxidized layers.
摘要翻译：半导体光学器件包括具有层结构的台面条，邻接和覆盖台面条的各侧的一对电流阻挡层，分别覆盖电流阻挡层之一的一对Al氧化层，p侧电极通过形成在Al氧化层之间的开口与台面条的顶表面接触。

49. 发明申请

US20020090014A1 Optical module assembling method, optical module and optical module assembling apparatus 审中-公开
标题翻译：光模块组装方法，光模块和光模块组装装置
公开(公告)号：US20020090014A1
公开(公告)日：2002-07-11
申请号：US09985005
申请日：2001-11-01
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Tomohisa Ishimaru
IPC分类号： H01S003/04
CPC分类号： H01S5/02248 , H01S5/0064 , H01S5/02272 , H01S5/02284 , H01S5/02415 , H01S5/02438 , H01S5/0683
摘要： The present invention provides a method of assembling an optical module in which a first carrier on which a semiconductor laser element is fixedly mounted and a second carrier on which a photodiode is fixedly mounted are fixedly soldered on a base. This method has a step of applying a solder onto the base; a step of placing the first and second carriers on the base; a step of heating the solder and photographing the heated solder; a step of detecting the fused state of the solder from the image data of the photographed solder; and a step of scrubbing the first or second carrier based on the detected state of the fused solder.
摘要翻译：本发明提供一种组装光学组件的方法，其中固定安装有半导体激光元件的第一载体和固定安装光电二极管的第二载体固定在基底上。该方法具有将焊料施加到基底上的步骤; 将第一和第二载体放置在基底上的步骤; 加热焊料并拍摄加热的焊料的步骤; 从所拍摄的焊料的图像数据中检测焊料的熔融状态的步骤; 以及基于熔融焊料的检测状态洗涤第一载体或第二载体的步骤。

50. 发明申请

US20020085596A1 Optical fiber with holding member, semiconductor laser module and Raman amplifier 审中-公开
标题翻译：带保持构件的光纤，半导体激光模块和拉曼放大器
公开(公告)号：US20020085596A1
公开(公告)日：2002-07-04
申请号：US09981989
申请日：2001-10-19
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Yuichiro Irie , Toshio Kimura
IPC分类号： H01S003/04 , H01S003/08 , H01S003/00
CPC分类号： H01S5/146 , H01S3/094003 , H01S3/302 , H01S5/02248 , H01S5/02284
摘要： An optical fiber with holding member according to the present invention has an optical fiber including a diffraction grating formed therein for reflecting only a laser beam having a predetermined wavelength range, and a ferrule into which the optical fiber is inserted and supported. The portion of the optical fiber on which the diffraction grating is formed extends outwardly beyond the end of the ferrule.
摘要翻译：根据本发明的具有保持构件的光纤具有包括形成在其中的用于仅反射具有预定波长范围的激光束的衍射光栅的光纤，以及插入和支撑光纤的套圈。其上形成有衍射光栅的光纤的部分向外延伸超过套圈的端部。

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