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    • 32. 发明授权
    • Semiconductor laser devices
    • 半导体激光器件
    • US4803692A
    • 1989-02-07
    • US903376
    • 1986-09-03
    • Shinji SakanoHiroyoshi Matsumura
    • Shinji SakanoHiroyoshi Matsumura
    • H01S5/00H01S3/107H01S5/0625H01S5/068H01S5/125H01S5/14H01S3/19
    • H01S3/107H01S5/141H01S5/06256H01S5/125
    • It is possible to narrow the emission spectrum linewidth of a semiconductor laser device by coupling optically an external resonator with one end surface of the semiconductor laser. However, the structure of the external resonator should match the phase of the light emitted by the laser. Heretofore, this matching has been effected by adjusting the length of the external resonator, and hence productivity and reproducibility have not been good. According to this invention, characteristics of the external resonator can be adjusted electrically to be matched with the phase of the emitted light owing to the fact that the external resonator is made of a material, whose refractive index can be varied electrically. Therefore the semiconductor laser device according to this invention is very practical.
    • 通过将外部谐振器与半导体激光器的一个端面光学耦合,可以缩小半导体激光器件的发射光谱线宽。 然而,外部谐振器的结构应与激光发射的光的相位相匹配。 迄今为止,这种匹配是通过调节外部谐振器的长度而实现的,因此生产率和再现性不好。 根据本发明,外部谐振器的特性可以被电调节以与发射光的相位匹配,这是由于外部谐振器由折射率可以变化的材料制成。 因此,根据本发明的半导体激光器件非常实用。
    • 35. 发明授权
    • Optical fiber coupling part
    • 光纤耦合部分
    • US07346237B2
    • 2008-03-18
    • US10538510
    • 2004-09-28
    • Hiroyoshi MatsumuraTaro Suzuki
    • Hiroyoshi MatsumuraTaro Suzuki
    • G02B6/32
    • G02B6/32G02B6/2551G02B6/4206
    • An optical fiber coupling part capable of reducing coupling loss while maintaining a large operating distance, and having a good module assembling property. AT least one GRIN lens having numerical aperture NA that is larger than numerical aperture NAs of a light-emitting source (such as a semiconductor laser) is fusion-spliced with one end of the optical fiber. All lights emitted from the light-emitting source can enter the GRIN lens, and the loss of the light can thereby be reduced. In addition, a second GRIN lens having numerical aperture NA2 is fusion-spliced with one end of the optical fiber having numerical aperture NAf, and further a first GRIN lens having numerical aperture NA1, which is larger than numerical aperture NA2, is fusion-spliced with the other end of the second GRIN lens. Thereby, the light emitted from the light-emitting source can efficiently enter the optical fiber, and loss of the light can thereby be reduced. In this case, the formula expressed by NAf≦NA2
    • 一种光纤耦合部件,能够在保持大的工作距离的同时减小耦合损耗,并且具有良好的模块组装性能。 具有比发光源(例如半导体激光器)的数值孔径NA大的数值孔径NA的至少一个GRIN透镜与光纤的一端熔接。 从发光源发出的所有光都可以进入GRIN透镜,从而可以减少光的损失。 此外,具有数值孔径NA 2的第二GRIN透镜与具有数字孔径NA 的光纤的一端进行熔接,并且还具有第一GRIN透镜,其具有 大于数值孔径NA 2的数值孔径NA 1与第二GRIN透镜的另一端熔接。 由此,从发光源射出的光可以有效地进入光纤,从而能够降低光的损失。 在这种情况下,由NA <= NA <2> N表示的公式是 合意。
    • 36. 发明申请
    • Optical switch and optical add/drop multiplexer
    • 光开关和光分插复用器
    • US20070211987A1
    • 2007-09-13
    • US11541783
    • 2006-10-02
    • Etsuo KoyamaHiroyoshi Matsumura
    • Etsuo KoyamaHiroyoshi Matsumura
    • G02B6/26
    • G02F1/133553G02F1/216G02F1/2955G02F2201/307G02F2203/055G02F2203/585
    • To provide with a wavelength-selection optical switch able to select a light with a certain wavelength and an optical add/drop multiplexer using the same. An optical switch comprising: a silicon substrate; a glass substrate arranged to face a surface of the silicon substrate and having a transparent electrode layer in its opposing surface; a light diffraction reflection layer aligned on a surface of the silicon substrate; a liquid crystal layer aligned between the light diffraction reflection layer and the transparent electrode layer; a silicon substrate electrical terminal extracted from a rear surface of the silicon substrate; and a means for applying voltage between the transparent electrode layer and the silicon substrate electrical terminal; wherein selection of wavelength of light diffracted and reflected by the light diffraction reflection layer is possible by controlling the refraction index of the liquid crystal layer through the voltage. Wavelength multiplexed light signal is widened its beam diameter by a collimator lens, the wavelength multiplexed light signal with widened beam diameter is directed to the optical switch, a light signal which has wavelength selected through the applied voltage on the optical switch is only diffracted and reflected by the optical switch.
    • 提供能够选择具有一定波长的光的波长选择光学开关和使用其的光分插复用器。 一种光开关,包括:硅衬底; 玻璃基板,其布置成面对硅基板的表面并且在其相对表面中具有透明电极层; 在硅衬底的表面上对准的光衍射反射层; 在所述光衍射反射层和所述透明电极层之间排列的液晶层; 从硅衬底的后表面提取的硅衬底电端子; 以及用于在所述透明电极层和所述硅衬底电端子之间施加电压的装置; 其中通过控制液晶层的折射率通过该电压,可以选择由光衍射反射层衍射和反射的光的波长。 波长复用光信号通过准直透镜加宽其光束直径,具有加宽光束直径的波长复用光信号被引导到光开关,通过光开关上的施加电压选择的波长的光信号仅被衍射和反射 通过光开关。
    • 37. 发明申请
    • Tunable optical filter and external-resonator-type semiconductor laser device using the same
    • 可调谐滤光器和使用其的外部谐振器型半导体激光器件
    • US20070177637A1
    • 2007-08-02
    • US11516725
    • 2006-09-06
    • Etsuo KoyamaHiroyoshi Matsumura
    • Etsuo KoyamaHiroyoshi Matsumura
    • H01S3/10
    • G02F1/216H01S5/141
    • In order to reduce the sizes of a tunable optical filter and an external-resonator-type tunable semiconductor laser device, the filter includes: a silicon substrate; a glass substrate which is disposed opposed to the face of the silicon substrate and is equipped with a transparent electrode layer provided over the face thereof disposed to the substrate; an optical diffracting-and-reflecting layer disposed over the face of the silicon substrate; and a liquid crystal layer disposed between the optical diffracting-and-reflecting layer and the transparent electrode layer; and the filter is characterized in that in the filter where the refractive index of the liquid crystal layer is controlled by the voltage applied between the silicon substrate and the transparent electrode layer, a silicon-substrate-side electrode terminal for applying the voltage thereto is provided on the backside of the silicon substrate, this filter being assembled in the external-resonator-type tunable semiconductor laser device.
    • 为了减小可调谐光学滤波器和外部谐振器型可调谐半导体激光器件的尺寸,滤波器包括:硅衬底; 玻璃基板,其与所述硅基板的表面相对设置,并且设置有设置在所述基板的面上的透明电极层; 设置在硅衬底的表面上的光学衍射和反射层; 以及设置在光学衍射 - 反射层和透明电极层之间的液晶层; 滤光器的特征在于,在通过硅衬底和透明电极层之间施加的电压来控制液晶层的折射率的滤光器中,提供用于施加电压的硅衬底侧电极端子 在硅衬底的背面,该滤波器组装在外部谐振器型可调谐半导体激光器件中。
    • 38. 发明申请
    • Optical fiber coupling componet
    • 光纤耦合元件
    • US20060045419A1
    • 2006-03-02
    • US10538510
    • 2004-09-28
    • Hiroyoshi MatsumuraTaro Suzuki
    • Hiroyoshi MatsumuraTaro Suzuki
    • G02B6/32
    • G02B6/32G02B6/2551G02B6/4206
    • An optical fiber coupling part capable of reducing coupling loss while maintaining a large operating distance, and having a good module assembling property. AT least one GRIN lens having numerical aperture NA that is larger than numerical aperture NAs of a light-emitting source (such as a semiconductor laser) is fusion-spliced with one end of the optical fiber. All lights emitted from the light-emitting source can enter the GRIN lens, and the loss of the light can thereby be reduced. In addition, a second GRIN lens having numerical aperture NA2 is fusion-spliced with one end of the optical fiber having numerical aperture NAf, and further a first GRIN lens having numerical aperture NA1, which is larger than numerical aperture NA2, is fusion-spliced with the other end of the second GRIN lens. Thereby, the light emitted from the light-emitting source can efficiently enter the optical fiber, and loss of the light can thereby be reduced. In this case, the formula expressed by NAf≦NA2
    • 一种光纤耦合部件,能够在保持大的工作距离的同时减小耦合损耗,并且具有良好的模块组装性能。 具有比发光源(例如半导体激光器)的数值孔径NA大的数值孔径NA的至少一个GRIN透镜与光纤的一端熔接。 从发光源发出的所有光都可以进入GRIN透镜,从而可以减少光的损失。 此外,具有数值孔径NA 2的第二GRIN透镜与具有数字孔径NA 的光纤的一端进行熔接,并且还具有第一GRIN透镜,其具有 大于数值孔径NA 2的数值孔径NA 1与第二GRIN透镜的另一端熔接。 由此,从发光源射出的光可以有效地进入光纤,从而能够降低光的损失。 在这种情况下,由NA <= NA <2> N表示的公式是 合意。