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1.发明授权
公开(公告)号：US5377212A
公开(公告)日：1994-12-27
申请号：US961648
申请日：1992-10-16
申请人： Kimio Tatsuno , Tetsuo Andou , Tsuyoshi Miyai , Sten Helmfrid , Masahiko Takahashi , Koji Muraoka , Shigeru Nakamura
发明人： Kimio Tatsuno , Tetsuo Andou , Tsuyoshi Miyai , Sten Helmfrid , Masahiko Takahashi , Koji Muraoka , Shigeru Nakamura
IPC分类号： G11B7/125 , H01S3/00 , H01S3/0941 , H01S3/108 , H01S3/109
CPC分类号： G11B7/127 , H01S3/109 , H01S3/0064 , H01S3/09415 , H01S3/108
摘要： A short-wavelength laser having a stable output and an optical information processing system capable of high-density recording are disclosed. A solid-state laser is used as a light source, and a nonlinear optical crystal is arranged in a resonator in order to produce a short wavelength by means of a solid-state laser. The retardation of the nonlinear optical crystal is controlled by determining the length of the nonlinear optical crystal. A solid-state laser device having a stable output with the noise removed from a pumping power light source is also provided. Further, the solid-state laser device is used as a light source for the optical information processing system, and the light of irrelevant wavelengths contained in the light from the solid-state laser device are removed by a device having the ability to select wavelengths. Thus, not only a stable light source with a short wavelength but also an optical information processing system capable of high-density recording are realized.
摘要翻译： 公开了具有稳定输出的短波长激光器和能够进行高密度记录的光学信息处理系统。 使用固态激光器作为光源，并且在谐振器中布置非线性光学晶体，以便通过固态激光器产生短波长。 通过确定非线性光学晶体的长度来控制非线性光学晶体的延迟。 还提供了具有从泵浦功率光源去除的噪声的稳定输出的固态激光器件。 此外，固体激光装置用作光学信息处理系统的光源，并且通过具有选择波长的能力的装置去除来自固体激光装置的光中包含的不相关波长的光。 因此，不仅实现了具有短波长的稳定光源，而且实现了能够进行高密度记录的光信息处理系统。
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公开(公告)号：US5854870A
公开(公告)日：1998-12-29
申请号：US027724
申请日：1993-03-04
申请人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
发明人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
CPC分类号： G02F1/3775 , G02F1/377 , G11B7/127 , G02F1/37 , G02F2001/3546 , H01S5/0092 , H01S5/02248 , H01S5/02288 , H01S5/141
摘要： There is disclosed a harmonic modulation device of waveguide type including a semiconductor laser, a waveguide for generating a nonlinear optical harmonic of the semiconductor laser by keeping phase matching, means for leading an optical beam of the semiconductor laser to the waveguide, electrodes disposed on the waveguide, and means for modulating a refractive index of the waveguide electro-optically to modulate a phase matching condition and thereby modulate an intensity of the harmonic.
摘要翻译： 公开了一种包括半导体激光器的波导型谐波调制装置，通过保持相位匹配产生半导体激光器的非线性光谐波的波导，将半导体激光器的光束引导到波导的装置， 波导，以及用于调制波导的光折射率以调制相位匹配条件并由此调制谐波强度的装置。
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公开(公告)号：US08218922B2
公开(公告)日：2012-07-10
申请号：US12527810
申请日：2008-02-15
申请人： Bengt Sahlgren , Sten Helmfrid
发明人： Bengt Sahlgren , Sten Helmfrid
CPC分类号： G02B6/02085 , G02B6/29317 , G02B6/29394 , H04B10/25133
摘要： There is disclosed an optical device for dispersion compensation of channels within a predetermined wavelength band, comprising: a waveguiding structure; and a grating structure formed in said waveguiding structure; characterized in that said grating structure has a Bragg frequency profile that is divided into contiguous periods, wherein the Bragg frequencies within each period vary between a lower Bragg frequency and an upper Bragg frequency, said lower and upper Bragg frequencies for each period both corresponding to wavelengths outside of said predetermined wavelength band.
摘要翻译： 公开了一种用于在预定波长带内的信道的色散补偿的光学装置，包括：波导结构; 以及形成在所述波导结构中的光栅结构; 其特征在于，所述光栅结构具有被划分为连续周期的布拉格频率分布，其中每个周期内的布拉格频率在较低的布拉格频率和上布喇格频率之间变化，每个周期的所述下布拉格和上布拉格频率对应于波长 在所述预定波长带之外。
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公开(公告)号：US20100080499A1
公开(公告)日：2010-04-01
申请号：US12527810
申请日：2008-02-15
申请人： Bengt Sahlgren , Sten Helmfrid
发明人： Bengt Sahlgren , Sten Helmfrid
IPC分类号： G02F1/01
CPC分类号： G02B6/02085 , G02B6/29317 , G02B6/29394 , H04B10/25133
摘要： There is disclosed an optical device for dispersion compensation of channels within a predetermined wavelength band, comprising: a waveguiding structure; and a grating structure formed in said waveguiding structure; characterized in that said grating structure has a Bragg frequency profile that is divided into contiguous periods, wherein the Bragg frequencies within each period vary between a lower Bragg frequency and an upper Bragg frequency, said lower and upper Bragg frequencies for each period both corresponding to wavelengths outside of said predetermined wavelength band.
摘要翻译： 公开了一种用于在预定波长带内的信道的色散补偿的光学装置，包括：波导结构; 以及形成在所述波导结构中的光栅结构; 其特征在于，所述光栅结构具有被划分为连续周期的布拉格频率分布，其中每个周期内的布拉格频率在较低的布拉格频率和上布喇格频率之间变化，每个周期的所述下布拉格和上布拉格频率对应于波长 在所述预定波长带之外。
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公开(公告)号：US07260292B2
公开(公告)日：2007-08-21
申请号：US11176448
申请日：2005-07-08
申请人： Bengt Sahlgren , Mikael Bergman , Johan Pejnefors , Raoul Stubbe , Sten Helmfrid , Bengt Johansson
发明人： Bengt Sahlgren , Mikael Bergman , Johan Pejnefors , Raoul Stubbe , Sten Helmfrid , Bengt Johansson
CPC分类号： G02B6/29358 , G02B6/29323
摘要： The invention is a spectrally selective optical coupler with a new geometry and a new principle of action. An optical coupler according to the invention comprises an optical fiber and an external lightguide. In the fiber there is provided a deflector that is operative to deflect light of a predetermined wavelength into a propagating mode of said lightguide. The outcoupled light is transferred to a region remote from the outcoupling portion of the fiber. The invention can be used to couple light from a first to a second optical fiber.
摘要翻译： 本发明是具有新几何形状和新的作用原理的光谱选择性光耦合器。 根据本发明的光耦合器包括光纤和外部光导。 在光纤中，提供了一个可将预定波长的光偏转成所述光导传播模式的偏转器。 输出耦合的光被转移到远离光纤的输出耦合部分的区域。 本发明可用于耦合来自第一至第二光纤的光。
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公开(公告)号：US20070077006A1
公开(公告)日：2007-04-05
申请号：US11543156
申请日：2006-10-05
申请人： Bengt Sahlgren , Johan Pejnefors , Sten Helmfrid
发明人： Bengt Sahlgren , Johan Pejnefors , Sten Helmfrid
CPC分类号： G02B6/29395 , G02B6/29358 , G02B6/29383 , H04J14/0206 , H04J14/021 , H04J14/06
摘要： A spectrally selective optical coupler is disclosed, comprising a first and a second waveguide; an external resonator defined by at least a first and a second mirror; and a respective deflecting portion in each of said waveguides for coupling light between the waveguide and the external resonator. The waveguides are arranged between the mirrors adjacent to each other in a plane that is generally parallel to said mirrors; and the external resonator is designed such that a resonant mode within the external resonator overlaps the deflecting portion in the first and the second waveguide. The inventive coupler solves some limiting geometrical problems encountered in the prior art. A lateral extension of a mode in the external resonator overlapping both waveguides is obtained using a curved resonator mirror or refractive elements or portions within the resonator.
摘要翻译： 公开了一种光谱选择性光耦合器，包括第一和第二波导; 由至少第一和第二反射镜限定的外部谐振器; 以及每个所述波导中的相应的偏转部分，用于在波导和外部谐振器之间耦合光。 波导布置在彼此相邻的反射镜之间，该平面大致平行于所述反射镜; 并且外部谐振器被设计成使得外部谐振器内的谐振模式与第一和第二波导中的偏转部重叠。 本发明的耦合器解决了现有技术中遇到的一些限制性几何问题。 使用谐振器中的弯曲谐振镜或折射元件或部分获得外部谐振器中重叠两个波导的模式的横向延伸。
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公开(公告)号：US20060147153A1
公开(公告)日：2006-07-06
申请号：US11176448
申请日：2005-07-08
申请人： Bengt Sahlgren , Mikael Bergman , Johan Pejnefors , Raoul Stubbe , Sten Helmfrid , Bengt Johansson
发明人： Bengt Sahlgren , Mikael Bergman , Johan Pejnefors , Raoul Stubbe , Sten Helmfrid , Bengt Johansson
CPC分类号： G02B6/29358 , G02B6/29323
摘要： The invention is a spectrally selective optical coupler with a new geometry and a new principle of action. An optical coupler according to the invention comprises an optical fiber and an external lightguide. In the fiber there is provided a deflector that is operative to deflect light of a predetermined wavelength into a propagating mode of said lightguide. The outcoupled light is transferred to a region remote from the outcoupling portion of the fiber. The invention can be used to couple light from a first to a second optical fiber.
摘要翻译： 本发明是具有新几何形状和新的作用原理的光谱选择性光耦合器。 根据本发明的光耦合器包括光纤和外部光导。 在光纤中，提供了一个可将预定波长的光偏转成所述光导传播模式的偏转器。 输出耦合的光被转移到远离光纤的输出耦合部分的区域。 本发明可用于耦合来自第一至第二光纤的光。
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公开(公告)号：US07373046B2
公开(公告)日：2008-05-13
申请号：US11543156
申请日：2006-10-05
申请人： Bengt Sahlgren , Johan Pejnefors , Sten Helmfrid
发明人： Bengt Sahlgren , Johan Pejnefors , Sten Helmfrid
IPC分类号： G02B6/34
CPC分类号： G02B6/29395 , G02B6/29358 , G02B6/29383 , H04J14/0206 , H04J14/021 , H04J14/06
摘要： A spectrally selective optical coupler is disclosed, comprising a first and a second waveguide; an external resonator defined by at least a first and a second mirror; and a respective deflecting portion in each of said waveguides for coupling light between the waveguide and the external resonator. The waveguides are arranged between the mirrors adjacent to each other in a plane that is generally parallel to said mirrors; and the external resonator is designed such that a resonant mode within the external resonator overlaps the deflecting portion in the first and the second waveguide. The inventive coupler solves some limiting geometrical problems encountered in the prior art. A lateral extension of a mode in the external resonator overlapping both waveguides is obtained using a curved resonator mirror or refractive elements or portions within the resonator.
摘要翻译： 公开了一种光谱选择性光耦合器，包括第一和第二波导; 由至少第一和第二反射镜限定的外部谐振器; 以及每个所述波导中的相应的偏转部分，用于在波导和外部谐振器之间耦合光。 波导布置在彼此相邻的反射镜之间，该平面大致平行于所述反射镜; 并且外部谐振器被设计成使得外部谐振器内的谐振模式与第一和第二波导中的偏转部重叠。 本发明的耦合器解决了现有技术中遇到的一些限制性几何问题。 使用谐振器中的弯曲谐振镜或折射元件或部分获得外部谐振器中重叠两个波导的模式的横向延伸。
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公开(公告)号：US07076133B2
公开(公告)日：2006-07-11
申请号：US10451988
申请日：2001-12-27
申请人： Ulf Öhlander , Sten Helmfrid , Bengt Sahlgren
发明人： Ulf Öhlander , Sten Helmfrid , Bengt Sahlgren
CPC分类号： G02B6/4215 , G02B6/02085 , G02B6/29323
摘要： The invention relates to the coupling of light to and from an optical waveguide, such as an optical fiber. Light of a specific wavelength is deflected out from the fiber, or into the fiber, in a substantially transverse direction with respect to the propagation direction of light in the waveguide, by a deflector 16 arranged in the fiber core 10. Wavelength selectivity of the deflector 16 is provided by a Bragg grating means located in the fiber core 10. The deflected light is collimated, or converged towards a focus, by an interface 15 between a cladding 11, having one index of refraction, and an outer medium 12, having another index of refraction. The ratio between the radius of the cladding 11 and the radius of the core 10 made sufficiently small for the collimating, or converging, effect to appear.
摘要翻译： 本发明涉及光与诸如光纤之类的光波导的耦合。 通过布置在光纤芯10中的偏转器16，将特定波长的光从相对于波导中的光的传播方向的基本横向方向从纤维或纤维偏转出来。偏转器的波长选择性 16由位于光纤芯10中的布拉格光栅装置提供。偏转的光通过具有一个折射率的包层11和具有另一个折射率的外部介质12之间的界面15准直或朝向焦点会聚。 折射率 影响包层11的半径与芯10的半径之间的比例对于准直或会聚效果而言足够小。
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