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1. 发明申请

US20170047706A1 OPTICAL DEVICE 有权
标题翻译：光学装置
公开(公告)号：US20170047706A1
公开(公告)日：2017-02-16
申请号：US15306565
申请日：2015-01-09
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Yojiro WATANABE , Takeshi SAKIMURA , Takayuki YANAGISAWA
IPC分类号： H01S3/131 , H01S3/063 , H01S3/08 , H01S3/16
CPC分类号： H01S3/1317 , G02B6/4266 , G02B6/4293 , G02B6/43 , H01S3/0632 , H01S3/0637 , H01S3/08054 , H01S3/1028 , H01S3/1603 , H01S3/163 , H01S3/17
摘要： An object is to provide an optical device capable of relaxing a manufacturing condition for an optical waveguide used in the optical device. An optical device 500 is provided with an optical waveguide 200 including a core and a cladding optically joined together, and a temperature controller 600 that controls temperature of the optical waveguide, wherein the optical waveguide includes the core and the cladding formed such that a normalized frequency specified for light propagating through the optical waveguide changes across a cutoff frequency of a guided mode determined from a structure of the optical waveguide in a temperature range in which a refractive index of the core is higher than a refractive index of the clad. The temperature controller controls the temperature of the optical waveguide over a temperature range across temperature at which the normalized frequency equals to the cutoff frequency.
摘要翻译：本发明的目的是提供一种能够缓和光学装置中使用的光波导的制造条件的光学装置。光学装置500设置有包括光学连接在一起的芯和包层的光波导200和控制光波导温度的温度控制器600，其中光波导包括芯和形成的包层，使得归一化频率对于通过光波导传播的光规定的光束在芯的折射率高于包层的折射率的温度范围内，在由光波导的结构确定的导模的截止频率上变化。温度控制器在标准化频率等于截止频率的温度的温度范围内控制光波导的温度。

2. 发明公开

US20230251509A1 SEMICONDUCTOR LIGHT MODULATING APPARATUS 审中-公开
公开(公告)号：US20230251509A1
公开(公告)日：2023-08-10
申请号：US18004657
申请日：2020-12-09
申请人： Mitsubishi Electric Corporation
发明人： Hayata FUKUSHIMA , Yojiro WATANABE , Seiji NAKANO , Yu UWADOI
IPC分类号： G02F1/015 , H01S5/026
CPC分类号： G02F1/015 , H01S5/0265 , G02F2201/12
摘要： A semiconductor light modulator (5) modulates light in accordance with a high-frequency wave signal (11). A terminal matching circuit (12) is connected in parallel to the semiconductor light modulator (5). The terminal matching circuit (12) has a resistor (8) and a capacitor (9) of 0.1 pF or lower connected in parallel to the resistor (8).

3. 发明申请

US20200381887A1 RIDGE WAVEGUIDE LASER DEVICE 审中-公开
公开(公告)号：US20200381887A1
公开(公告)日：2020-12-03
申请号：US16319758
申请日：2016-08-17
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Yojiro WATANABE , Takayuki YANAGISAWA
IPC分类号： H01S3/10 , H01S3/06 , H01S3/063
摘要： A problem with a conventional waveguide type laser device is that in the case in which an isotropic laser medium is used for a core, linearly polarized light is not provided. A ridge waveguide laser device of the present disclosure includes: a substrate; a core joined to the substrate and having a laser medium, the core having a refractive index higher than that of the substrate; and a cladding joined to the core, constituting a ridge waveguide together with the core, and made from a birefringent material having ordinary and extraordinary refractive indices lower than the refractive index of the core, the ordinary and extraordinary refractive indices being different.

4. 发明申请

US20180198250A1 PLANAR WAVEGUIDE LASER APPARATUS 审中-公开
公开(公告)号：US20180198250A1
公开(公告)日：2018-07-12
申请号：US15737590
申请日：2015-08-07
申请人： Mitsubishi Electric Corporation
发明人： Takeshi SAKIMURA , Yuhi KONO , Kohei SAKAI , Yukari TAKADA , Yojiro WATANABE , Fumio SHODA , Takayuki YANAGISAWA
IPC分类号： H01S3/063 , H01S3/094
CPC分类号： H01S3/063 , G02B6/122 , H01S3/0615 , H01S3/0621 , H01S3/0632 , H01S3/08018 , H01S3/08022 , H01S3/08077 , H01S3/08095 , H01S3/094
摘要： There are provided: a planar waveguide in which claddings (2) and (3) each having a smaller refractive index than a laser medium for absorbing pump light (5) are bonded to an upper surface (1a) and a lower surface (1b) of a core (1) which is formed from the laser medium; pump light generation sources (4a) and (4b) for emitting pump light (5) to side surfaces (1c) and (1d) of the core (1); and laser light high reflection films (6a) and (6b) formed on side surfaces (1e) and (1f) of the core (1). Each of side surfaces (2e) and (2f) of the cladding (2) corresponding to the side surfaces (1e) and (1f) of the core (1) has a ridge structure (20) in which a part thereof is recessed.

5. 发明申请

US20190148903A1 PLANAR WAVEGUIDE LASER DEVICE 审中-公开
公开(公告)号：US20190148903A1
公开(公告)日：2019-05-16
申请号：US16307209
申请日：2016-07-28
申请人： Mitsubishi Electric Corporation
发明人： Fumio SHOHDA , Yojiro WATANABE , Takayuki YANAGISAWA
IPC分类号： H01S3/063 , H01S3/06
摘要： In a planar waveguide laser device (1), a substrate (6) is joined to the upper surface of a waveguide (2). A recess (6a) having a chamfered shape is formed along an edge of an end facet of the substrate (6) on the side of the waveguide (2), the end facet being perpendicular to the direction of laser oscillation. An end facet of the waveguide (2) perpendicular to the oscillation direction of laser light is covered with a coating (7). A wraparound portion (7a) continuing from the coating (7) covers the upper surface of the waveguide (2) facing the recess (6a) of the substrate (6).

6. 发明申请

US20160301179A1 FLAT WAVEGUIDE-TYPE LASER DEVICE 有权
标题翻译：平面波形激光器件
公开(公告)号：US20160301179A1
公开(公告)日：2016-10-13
申请号：US15036539
申请日：2013-12-27
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Yojiro WATANABE , Takeshi SAKIMURA , Takayuki YANAGISAWA
IPC分类号： H01S3/063 , H01S3/16 , H01S3/17
CPC分类号： H01S3/0632 , H01S3/0619 , H01S3/10061 , H01S3/1608 , H01S3/1618 , H01S3/1643 , H01S3/175 , H01S2301/02
摘要： A configuration is provided with a laser medium 1 of a refractive index nc that is an isotropic medium and includes an upper surface and a lower surface, where at least one of the upper surface and the lower surface is bonded with a cladding 2 having a refractive index satisfying a relationship of no
摘要翻译：具有作为各向同性介质的折射率nc的激光介质1的结构，其包括上表面和下表面，其中上表面和下表面中的至少一个与具有折射率的包层2接合满足关系的指数为

7. 发明申请

US20160197450A1 LASER AMPLIFICATION DEVICE 有权
标题翻译：激光放大器件
公开(公告)号：US20160197450A1
公开(公告)日：2016-07-07
申请号：US14915741
申请日：2014-05-14
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Takuya TAKASAKI , Yojiro WATANABE , Takeshi SAKIMURA , Takayuki YANAGISAWA
IPC分类号： H01S3/063 , H01S3/0941 , H01S3/23 , H01S3/08
CPC分类号： H01S3/0632 , H01S3/0621 , H01S3/0623 , H01S3/08095 , H01S3/0941 , H01S3/09415 , H01S3/23 , H01S3/2308 , H01S3/2383
摘要： Plural signal beams enter a planar waveguide laser amplifier from different directions to follow different paths therein, which reduces a region not contributing to amplification where no signal beam passes. Plural signal beams follow different paths in the planar waveguide, and a second signal beam utilizes the gain of a portion of the planar waveguide that a first signal beam cannot utilize. By this configuration, a region not contributing to amplification of the signal beams in the planar waveguide laser amplifier can be reduced, causing to efficiently amplify plural signal beams.
摘要翻译：多个信号光束从不同的方向进入平面波导激光放大器，以跟随其中的不同路径，这减少了在无信号光束通过的情况下无助于放大的区域。多个信号光束沿着平面波导中的不同路径，并且第二信号光束利用第一信号光束不能利用的平面波导的一部分的增益。通过这种配置，可以减少不对平面波导激光放大器中的信号光束进行放大的区域，从而有效地放大多个信号光束。

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