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公开(公告)号：US20210011352A1
公开(公告)日：2021-01-14
申请号：US16897432
申请日：2020-06-10
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: G02F1/225
Abstract: An optical device includes an optical modulator formed on an optical IC chip. A shape of the IC chip is a rectangle or a parallelogram. The optical modulator includes an interferometer, wiring patterns, a first polymer pattern, and a second polymer pattern. The interferometer includes an optical waveguide that is formed in a direction from a first edge to a second edge of the optical IC chip. The wiring patterns are formed parallel to the optical waveguide. The first polymer pattern is formed along the first edge or the second edge. The second polymer pattern is connected to the first polymer pattern and formed on the optical waveguide without overlapping the wiring patterns.
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公开(公告)号：US20200064404A1
公开(公告)日：2020-02-27
申请号：US16503696
申请日：2019-07-05
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: G01R31/3185 , G01R31/28 , H04B10/40 , G02B27/28
Abstract: An optical device is formed on an optical IC chip. The shape of the optical IC chip is rectangular or parallelogram. The optical device induces: an optical device circuit; a first optical waveguide that is coupled to the optical device circuit; a pad that is electrically connected to the optical device circuit; a grating coupler; and a second optical waveguide that is coupled to the grating coupler. The pad is formed in a region close to a first side of the optical IC chip. The grating coupler is formed in a specified region, which is not close to the first side, on the optical IC chip. The first optical waveguide and the second optical waveguide are respectively extended to an edge of the optical IC chip.
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公开(公告)号：US10551642B2
公开(公告)日：2020-02-04
申请号：US16050347
申请日：2018-07-31
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: G02F1/01
Abstract: A tunable light source includes a substrate; a light source; a wavelength selecting device that selects, according to a control signal, output light with a specific wavelength from light output from the light source; a wavelength filter that is disposed on the substrate, filters the output light, and outputs the filtered light; a light-receiving device that receives the filtered light from the wavelength filter; and a controller configured to generate the control signal based on an output transmittance corresponding to a quantity of the received light received by the light-receiving device, a first transmittance corresponding to a target wavelength, a second transmittance corresponding to a shorter-wavelength limit of a control range including the target wavelength, and a third transmittance corresponding to a longer-wavelength limit of the control range, and output the generated control signal to the wavelength selecting device.
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公开(公告)号：US10509166B2
公开(公告)日：2019-12-17
申请号：US16048753
申请日：2018-07-30
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
Abstract: A tunable optical source includes a substrate, a light source disposed on the substrate, and a wavelength selecting element configured to select light of a specific wavelength as output light, from light emitted from the light source, in accordance with a control signal. On the substrate, a wavelength filter including multiple output ports and a photodetector are disposed. The wavelength filter is configured to receive a part of the output light and to output light beams to the respective output ports. The photodetector is configured to receive the light beam output from one of the output ports. The tunable optical source further includes an inspection waveguide connecting to the photodetector at one end, and an inspection light input unit for inputting inspection light provided at the other end of the inspection waveguide.
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公开(公告)号：US10120209B2
公开(公告)日：2018-11-06
申请号：US15244438
申请日：2016-08-23
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
Abstract: An optical transmission device includes: an optical modulation package that includes a plurality of terminals that are exposed to an outside from a front surface thereof, and performs optical modulation on electrical signals input from the terminals; a flexible board that includes: an electrode arrangement part on which electrodes respectively connected to the terminals are arranged side by side to transmit the electrical signals to the terminals; and an arm part that projects more outward than an electrode located on an end of the electrode arrangement part and extends toward the optical modulation package to be locked to the optical modulation package; and an optical transmission member that transmits an optical signal obtained by the optical modulation performed by the optical modulation package.
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Patent Agency Ranking
公开(公告)号：US10107958B2
公开(公告)日：2018-10-23
申请号：US15131389
申请日：2016-04-18
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
Abstract: A flexible substrate includes a first pad that extends from an end of the flexible substrate to a center of the flexible substrate, and at least a part of which is fixed to the first part; a second pad that extends from the end of the flexible substrate to the center at a position adjacent to the first pad, and at least a part of which is fixed to the first part; a signal line that connects a tip of the first pad and the second part and that is narrower in width than the first pad; and a coverlay that covers an area where the signal line is arranged and that includes a protrusion protruding, at a position at which the first pad is arranged, toward the end of the flexible substrate relative to the area where the signal line is arranged.
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公开(公告)号：US10103809B2
公开(公告)日：2018-10-16
申请号：US15822673
申请日：2017-11-27
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: H04B10/572 , H04B10/079 , G02B6/12
Abstract: A wavelength tunable light source includes a light source, a wavelength monitor circuit configured to receive light emitted from the light source, and a processor that controls the light source based upon an output value of the wavelength monitor circuit, wherein the wavelength monitor circuit has a wavelength filter with a periodic transmission spectrum, and three photo detectors connected to outputs of the wavelength filter, and wherein the processor is configured to calculate a ratio of photo-detection normalized with two of three quantities of light received at the three photo detectors and control electric current input to the light source such that a calculated ratio of photo-detection approaches a target ratio at a designated wavelength.
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公开(公告)号：US10082628B2
公开(公告)日：2018-09-25
申请号：US15605192
申请日：2017-05-25
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02B6/2861 , G02B6/125 , G02B6/29352 , G02B6/29398 , G02B2006/12061 , G02B2006/12097
Abstract: A disclosed optical device includes a first waveguide disposed between a branching portion and a multiplexing portion on a semiconductor substrate, and a second waveguide disposed between the branching portion and the multiplexing portion, the second waveguide being longer than the first waveguide. In the optical device, an optical confinement effect of the first waveguide is greater than an optical confinement effect of the second waveguide, the first waveguide has a curvature with a first curvature radius (Rs), the second waveguide has a curvature with a second curvature radius (Rl), and the first curvature radius is smaller than the second curvature radius.
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公开(公告)号：US09703168B2
公开(公告)日：2017-07-11
申请号：US14710087
申请日：2015-05-12
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama , Yoshinobu Kubota
CPC classification number: G02F1/225 , G02F1/0121 , G02F2001/212 , G02F2201/18
Abstract: An optical module includes: a driver; an optical modulator; a connector that is electrically connected to either the driver or the optical modulator and is provided with an input/output terminal; and a flexible substrate that has flexibility, is connected to the connector, and transfers an electrical signal generated by the driver to the optical modulator, wherein in an end part connected to the connector, the flexible substrate has, on a first surface facing the input/output terminal, a signal-purpose wiring pattern used for transferring the electrical signal and a ground-purpose wiring pattern formed along the signal-purpose wiring pattern, and has, on a second surface that is different from the first surface, a ground electrode that partially covers the second surface and has a shorter electrical distance to the signal-purpose wiring pattern than an electrical distance between the signal-purpose wiring pattern and the ground-purpose wiring pattern.
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公开(公告)号：US20170017098A1
公开(公告)日：2017-01-19
申请号：US15281166
申请日：2016-09-30
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama , Shinji Maruyama
CPC classification number: G02F1/0356 , G02B6/1228 , G02B6/14 , G02B6/4286 , G02B2006/12123 , G02F1/0316 , G02F1/0327 , G02F1/225 , G02F1/2255 , G02F2001/212 , G02F2201/58 , G02F2202/20 , H04B10/0779
Abstract: An optical device includes an optical waveguide that includes an incident waveguide, parallel waveguides along an electrode, and emission waveguides, formed on a substrate having an electro-optical effect, a first emission waveguide among the emission waveguides is set as an output waveguide of signal light, for output to an external destination and a second emission waveguide among the emission waveguides is set as a monitoring optical waveguide for the signal light; a photodetector that is disposed over the monitoring optical waveguide; and a groove formed on a portion of the substrate, where the photodetector of the monitoring optical waveguide is disposed. The monitoring optical waveguide has a width that, as compared with the width at a starting point side, is formed to increase as the monitoring optical waveguide approaches the groove.
Abstract translation: 光学装置包括光波导，其包括入射波导，沿着电极的平行波导，以及形成在具有电光效应的基板上的发射波导，发射波导中的第一发射波导被设置为信号的输出波导 将用于输出到外部目的地的光和发射波导中的第二发射波导设置为信号光的监视光波导; 设置在监视光波导上的光电检测器; 以及形成在基板的一部分上的凹槽，其中设置有监视光波导的光电检测器。 监视光波导具有与监视光波导接近凹槽时相比，起始点侧的宽度形成为增加的宽度。
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