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公开(公告)号：US20090022903A1
公开(公告)日：2009-01-22
申请号：US11814894
申请日：2006-03-17
申请人： Hiroyuki Suzuki , Masaki Asobe , Takeshi Umeki , Yoshiki Nishida , Osamu Tadanaga , Tsutomu Yanagawa , Katsuaki Magari , Hiroyasu Mawatari , Hiroshi Miyazawa , Junji Yumoto
发明人： Hiroyuki Suzuki , Masaki Asobe , Takeshi Umeki , Yoshiki Nishida , Osamu Tadanaga , Tsutomu Yanagawa , Katsuaki Magari , Hiroyasu Mawatari , Hiroshi Miyazawa , Junji Yumoto
IPC分类号： B29C71/00
CPC分类号： G02F1/3558
摘要： The present invention provides a periodically-poled structure with high conversion efficiency and improved manufacturing yield. The method for manufacturing a periodically-poled structure in a second order nonlinear optical crystal having a single domain structure (31) includes the steps of forming a resist pattern (32) which matches a polarization-inverted period on a −Z surface of the second order nonlinear optical crystal (31), and applying voltage to the −Z surface as a negative voltage where the resist pattern (32) is formed, and a +Z surface as a positive voltage so as to apply an electric field in the second order nonlinear optical crystal (31), wherein the second order nonlinear optical crystal (31) contains at least one element as a dopant which compensate for the crystal defects.
摘要翻译： 本发明提供了具有高转换效率和提高的制造产量的周期性极化结构。 在具有单畴结构（31）的二阶非线性光学晶体中制造周期性极化结构的方法包括以下步骤：形成与第二晶体结构的-Z表面上的偏振反转周期匹配的抗蚀剂图案（32） 并且向-Z面施加电压作为形成抗蚀剂图案（32）的负电压，并且将+ Z表面作为正电压施加电压，以便以第二次施加电场 非线性光学晶体（31），其中二阶非线性光学晶体（31）包含补偿晶体缺陷的至少一种元素作为掺杂剂。
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公开(公告)号：US07729585B2
公开(公告)日：2010-06-01
申请号：US11813982
申请日：2006-01-17
申请人： Katsuaki Magari , Tsutomu Yanagawa , Yoshiki Nishida , Hiroyasu Mawatari , Osamu Tadanaga , Masaki Asobe , Hiroyuki Suzuki , Hiroshi Miyazawa , Junji Yumoto
发明人： Katsuaki Magari , Tsutomu Yanagawa , Yoshiki Nishida , Hiroyasu Mawatari , Osamu Tadanaga , Masaki Asobe , Hiroyuki Suzuki , Hiroshi Miyazawa , Junji Yumoto
CPC分类号： G02F1/3534 , G01J1/32 , G01J3/108 , G01J3/433 , G02B2006/12097 , H01S5/005 , H01S5/0078 , H01S5/0092 , H01S5/4012 , H01S5/4087
摘要： A light source apparatus with modulation function has a wavelength conversion module (75) composed of a nonlinear optical material with a structure having a nonlinear constant modulated periodically. It outputs a difference frequency or sum frequency produced by multiplexing pumping light from semiconductor laser light sources (71) and (72) with different wavelengths through a WDM coupler (74) and by launching the multiplexed light into the optical waveguide. The semiconductor laser light source (72) includes a diffraction grating. The semiconductor laser light source (71) includes a section for modulating output light emitted from its semiconductor laser, and is connected to an external FBG (73) which has a reflection band narrower than a resonance wavelength spacing determined by the device length of the semiconductor laser. The FBG (73) is supplied with the modulated output.
摘要翻译： 具有调制功能的光源装置具有由非线性光学材料组成的波长转换模块（75），该非线性光学材料具有周期性非线性恒定调制的结构。 输出通过WDM耦合器（74）将来自半导体激光光源（71）和（72）的不同波长的泵浦光复用并通过将复用光发射到光波导中而产生的差频或和频。 半导体激光光源（72）包括衍射光栅。 半导体激光光源（71）包括用于调制从其半导体激光器发射的输出光的部分，并连接到具有比由半导体器件的器件长度确定的谐振波长间隔窄的反射带的外部FBG（73） 激光。 FBG（73）提供调制输出。
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公开(公告)号：US20100053720A1
公开(公告)日：2010-03-04
申请号：US11813982
申请日：2006-01-17
申请人： Katsuaki Magari , Tsutomu Yanagawa , Yoshiki Nishida , Hiroyasu Mawatari , Osamu Tadanaga , Masaki Asobe , Hiroyuki Suzuki , Hiroshi Miyazawa , Junji Yumoto
发明人： Katsuaki Magari , Tsutomu Yanagawa , Yoshiki Nishida , Hiroyasu Mawatari , Osamu Tadanaga , Masaki Asobe , Hiroyuki Suzuki , Hiroshi Miyazawa , Junji Yumoto
CPC分类号： G02F1/3534 , G01J1/32 , G01J3/108 , G01J3/433 , G02B2006/12097 , H01S5/005 , H01S5/0078 , H01S5/0092 , H01S5/4012 , H01S5/4087
摘要： A light source apparatus with modulation function has a wavelength conversion module (75) composed of a nonlinear optical material with a structure having a nonlinear constant modulated periodically. It outputs a difference frequency or sum frequency produced by multiplexing pumping light from semiconductor laser light sources (71) and (72) with different wavelengths through a WDM coupler (74) and by launching the multiplexed light into the optical waveguide. The semiconductor laser light source (72) includes a diffraction grating. The semiconductor laser light source (71) includes a section for modulating output light emitted from its semiconductor laser, and is connected to an external FBG (73) which has a reflection band narrower than a resonance wavelength spacing determined by the device length of the semiconductor laser. The FBG (73) is supplied with the modulated output.
摘要翻译： 具有调制功能的光源装置具有由非线性光学材料组成的波长转换模块（75），该非线性光学材料具有周期性非线性恒定调制的结构。 输出通过WDM耦合器（74）将来自半导体激光光源（71）和（72）的不同波长的泵浦光复用并通过将复用光发射到光波导中而产生的差频或和频。 半导体激光光源（72）包括衍射光栅。 半导体激光光源（71）包括用于调制从其半导体激光器发射的输出光的部分，并连接到具有比由半导体器件的器件长度确定的谐振波长间隔窄的反射带的外部FBG（73） 激光。 FBG（73）提供调制输出。
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公开(公告)号：US20100039699A1
公开(公告)日：2010-02-18
申请号：US12440006
申请日：2007-09-28
申请人： Masaki Asobe , Takeshi Umeki , Osamu Tadanaga , Yoshiki Nishida , Tsutomu Yanagawa , Katsuaki Magari , Hiroyuki Suzuki
发明人： Masaki Asobe , Takeshi Umeki , Osamu Tadanaga , Yoshiki Nishida , Tsutomu Yanagawa , Katsuaki Magari , Hiroyuki Suzuki
CPC分类号： G02F1/3534 , G02F1/3544 , G02F1/395 , G02F2001/3548 , G02F2201/128
摘要： A wavelength converter which performs simultaneously wavelength conversion for a plurality of input light wavelengths that are unequally intervals, is provided. The nonlinear material of the wavelength converter has a modulation structure which has modulation of a nonlinear optical constant at a period Λ0 in a propagating direction of light, a phase being continuously changed each period Λ0 and a continuous phase modulation for a different period Λph being added to the modulation structure. The nonlinear material has a modulation structure obtained by changing a modulation curve for the phase modulation, wherein a phase mismatch Δβ is represented by Δβ=2π(n3/λ3−n2/λ2−n1/λ1), and at least three peaks at unequally intervals within a plurality of peaks for conversion efficiency represented by 2π/Λ0+2πi/Λf (i=m, m+1, . . . , n: where m and n are positive or negative integers) have highest conversion efficiency.
摘要翻译： 提供了对于不等间隔的多个输入光波长同时进行波长转换的波长转换器。 波长转换器的非线性材料具有调制结构，该调制结构在光的传播方向上具有在周期Λ0处的非线性光学常数的调制，每个周期Λ0连续地改变相位，并且对不同周期的连续相位调制Λph被添加 到调制结构。 非线性材料具有通过改变相位调制的调制曲线而获得的调制结构，其中相位失配＆Dgr; 由＆Dgr;＆bgr; = 2＆pgr;（n3 /λ3-n2 /λ2-n1 /λ1）表示，并且在由2＆pgr; /Λ0+ 2＆pgr i表示的转换效率的多个峰内以不等间隔的至少三个峰 /Λf（i = m，m + 1，...，n：其中m和n是正整数或负整数）具有最高的转换效率。
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公开(公告)号：US07940451B2
公开(公告)日：2011-05-10
申请号：US12440006
申请日：2007-09-28
申请人： Masaki Asobe , Takeshi Umeki , Osamu Tadanaga , Yoshiki Nishida , Tsutomu Yanagawa , Katsuaki Magari , Hiroyuki Suzuki
发明人： Masaki Asobe , Takeshi Umeki , Osamu Tadanaga , Yoshiki Nishida , Tsutomu Yanagawa , Katsuaki Magari , Hiroyuki Suzuki
IPC分类号： G02F1/37
CPC分类号： G02F1/3534 , G02F1/3544 , G02F1/395 , G02F2001/3548 , G02F2201/128
摘要： A wavelength converter which performs simultaneously wavelength conversion for a plurality of input light wavelengths that are unequally intervals, is provided. The nonlinear material of the wavelength converter has a modulation structure which has modulation of a nonlinear optical constant at a period Λ0 in a propagating direction of light, a phase being continuously changed each period Λ0 and a continuous phase modulation for a different period Λph being added to the modulation structure. The nonlinear material has a modulation structure obtained by changing a modulation curve for the phase modulation, wherein a phase mismatch Δβ is represented by Δβ=2π(n3/λ3−n2/λ2−n1/λ1), and at least three peaks at unequally intervals within a plurality of peaks for conversion efficiency represented by 2π/Λ0+2πi/Λf (i=m, m+1, . . . , n: where m and n are positive or negative integers) have highest conversion efficiency.
摘要翻译： 提供了对于不等间隔的多个输入光波长同时进行波长转换的波长转换器。 波长转换器的非线性材料具有调制结构，该调制结构在光的传播方向上具有在周期Λ0处的非线性光学常数的调制，每个周期Λ0连续地改变相位，并且对不同周期的连续相位调制Λph被添加 到调制结构。 非线性材料具有通过改变相位调制的调制曲线而获得的调制结构，其中相位失配＆Dgr; 由＆Dgr;＆bgr; = 2＆pgr（n3 /λ3-n2 /λ2-n1 /λ1）表示，并且在由2＆pgr; /Λ0+ 2＆pgr i表示的转换效率的多个峰内的不等间隔处的至少三个峰 /Λf（i = m，m + 1，...，n：其中m和n是正整数或负整数）具有最高的转换效率。
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公开(公告)号：US20090303486A1
公开(公告)日：2009-12-10
申请号：US12306444
申请日：2007-06-20
申请人： Katsuaki Magari , Tsutomu Yanagawa , Toshiki Nishida , Osamu Tadanaga , Masaki Asobe , Takeshi Umeki , Hiroyuki Suzuki
发明人： Katsuaki Magari , Tsutomu Yanagawa , Toshiki Nishida , Osamu Tadanaga , Masaki Asobe , Takeshi Umeki , Hiroyuki Suzuki
CPC分类号： G01N21/39 , G01N21/3504 , G01N2021/399 , G01N2201/06113 , G02F1/3534
摘要： A light source is provided that realizes a single spectral linewidth having a half value width of 1 MHz or less and that is not influenced by the ambient temperature. A light source includes first laser (71) generating first laser light, second laser (12) generating second laser light, and nonlinear optical crystal (13) wherein the first laser light and the second laser light are injected into the nonlinear optical crystal to generate coherent light by the generation of a difference frequency or a sum frequency. The second laser (12) is a wavelength-tunable light source that includes therein a diffraction grating and that can sweep the wavelength of the second laser light. The first laser (71) is composed of semiconductor laser and a fiber grating that has a reflection bandwidth narrower than a resonance wavelength spacing determined by the laser chip length of the semiconductor laser.
摘要翻译： 提供一种光源，其实现具有1MHz或更小的半值宽度且不受环境温度影响的单个光谱线宽。 光源包括产生第一激光的第一激光器（71），产生第二激光的第二激光器（12）和非线性光学晶体（13），其中第一激光和第二激光被注入到非线性光学晶体中以产生 相干光通过产生差频或和频。 第二激光器（12）是其中包括衍射光栅并且可以扫描第二激光的波长的波长可调光源。 第一激光器（71）由半导体激光器和具有比由半导体激光器的激光器芯片长度确定的谐振波长间隔窄的反射带宽的光纤光栅组成。
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7.发明授权公开(公告)号：US06728025B2
公开(公告)日：2004-04-27
申请号：US10263233
申请日：2002-10-02
IPC分类号： H01S300
CPC分类号： H04B10/0731
摘要： In an SOA characteristic evaluation method, the current is supplied to an SOA. An optical output generated by the SOA that have received the current is measured. Transmission light obtained by transmitting the optical output through a wavelength filter and/or a polarizer is measured. The characteristic of the SOA is evaluated on the basis of the measurement result of the optical output and the measurement result of the transmission light without using an optical input to the SOA. An SOA characteristic evaluation apparatus is also disclosed.
摘要翻译： 在SOA特性评估方法中，将电流提供给SOA。 测量已经接收到电流的由SOA生成的光输出。 测量通过波长滤波器和/或偏振器透射光输出而获得的透射光。 基于光输出的测量结果和传输光的测量结果，不对SOA进行光输入来评估SOA的特性。 还公开了SOA特性评估装置。
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