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Patent Agency Ranking
公开(公告)号：US20150093120A1
公开(公告)日：2015-04-02
申请号：US14348237
申请日：2012-09-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Masahito Mure , Junichiro Ichikawa
IPC: H04B10/548 , H04B10/564
CPC classification number: H04B10/548 , H04B10/5053 , H04B10/5057 , H04B10/5165 , H04B10/564
Abstract: It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.
Abstract translation: 调制载体光以产生光学边带成分时，可以以简单的结构抑制载流子。 光载波抑制信号发生器包括用于将输入载波光分为两个光束的第一分离装置，调制一个分离载波光束并输出包括光边带分量的光的光调制器，相位调制器， 光束，以及用于将光学调制器的输出光分成两束光的第二或第三分离装置。 由第二或第三分离装置分离的输出光和相位调制器的输出光被多路复用以获得光功率的信号波形的幅度，并且控制光调制器使得所获得的值最小化。
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公开(公告)号：US20210294040A1
公开(公告)日：2021-09-23
申请号：US17174611
申请日：2021-02-12
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Norikazu Miyazaki
IPC: G02B6/30
Abstract: An optical functional device includes a package case accommodating an optical functional element, an input optical fiber, and an output optical fiber. The optical functional device includes a first reflecting surface that reflects input light output from the input optical fiber to an optical path of output light, a second reflecting surface that reflects the input light to the optical functional element, and a third reflecting surface that reflects the output light in a direction in which the output light becomes further away from an optical axis of the input optical fiber. An optical axis of a leaked light beam transmitted through the second reflecting surface after being reflected by the first reflecting surface or an extension line of the optical axis in an optical propagation medium does not include a portion that is aligned with an optical axis of the output light reflected by the third reflecting surface.
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公开(公告)号：US10338414B2
公开(公告)日：2019-07-02
申请号：US15719582
申请日：2017-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Junichiro Ichikawa
Abstract: Provided is an optical modulator module including a waveguide substrate in which an optical waveguide and control electrodes (signal electrode, DC bias electrodes, and the like) for controlling a light wave propagating through the optical waveguide are formed, a relay substrate which is disposed in the vicinity of the waveguide substrate and in which a DC bias wiring for supplying a DC bias voltage to the control electrodes (DC bias electrodes) is formed, and a package case which stores the waveguide substrate and the relay substrate. A loop of wire standing from the relay substrate to a position higher than a top surface of the waveguide substrate is provided in a part of the DC bias wiring. The loop of wire is disposed inside the package case at a position within 10 mm from any one of locations where a solder is used.
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公开(公告)号：US11493788B2
公开(公告)日：2022-11-08
申请号：US17170034
申请日：2021-02-08
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Toshio Kataoka
Abstract: An optical modulator includes a substrate on which an optical waveguide and a modulation electrode that modulates a light wave propagating through the optical waveguide are formed, and a case housing the substrate, the optical waveguide includes at least an optical branching part that branches one light wave into two light waves or an optical combining part that combines two light waves into one light wave, the modulation electrode has a signal electrode and a ground electrode, and a part of the signal electrode is disposed so as to cross the optical branching part or the optical combining part, and the optical modulator is provided with a suppressing unit that suppresses changes in an intensity ratio of the light waves branched at the optical branching part or an intensity ratio of the light waves combined at the optical combining part, by the signal electrode.
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公开(公告)号：US11333832B2
公开(公告)日：2022-05-17
申请号：US17174611
申请日：2021-02-12
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Norikazu Miyazaki
Abstract: An optical functional device includes a package case accommodating an optical functional element, an input optical fiber, and an output optical fiber. The optical functional device includes a first reflecting surface that reflects input light output from the input optical fiber to an optical path of output light, a second reflecting surface that reflects the input light to the optical functional element, and a third reflecting surface that reflects the output light in a direction in which the output light becomes further away from an optical axis of the input optical fiber. An optical axis of a leaked light beam transmitted through the second reflecting surface after being reflected by the first reflecting surface or an extension line of the optical axis in an optical propagation medium does not include a portion that is aligned with an optical axis of the output light reflected by the third reflecting surface.
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