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公开(公告)号：US20200373691A1
公开(公告)日：2020-11-26
申请号：US16849474
申请日：2020-04-15
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Tomonori AZUMA , Tetsuo ISHIZAKA , Koji OTSUBO
Abstract: An optical module includes: a first board having an optical component bonded thereto with an adhesive; a connection structure part rising from the first board and made of a material having lower thermal conductivity than thermal conductivity of a material of the first board; and a second board joined to the connection structure part.
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公开(公告)号：US10746924B2
公开(公告)日：2020-08-18
申请号：US15178945
申请日：2016-06-10
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
Abstract: An optical communication device includes a support substrate, an optical waveguide, and a detector. The optical waveguide includes a first cladding layer that is formed on the support substrate, and is composed of silicon oxide or a material containing silicon oxide; a second cladding layer formed on the first cladding layer; and a core that is formed within the second cladding layer or between the first cladding layer and the second cladding layer, and is composed of silicon or a silicon-containing material. The detector contacts a part of the core, and is adapted to detect an intensity of light propagating through the core.
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公开(公告)号：US10714896B2
公开(公告)日：2020-07-14
申请号：US16390572
申请日：2019-04-22
Applicant: Fujitsu Optical Components Limited
Inventor： Koji Otsubo
Abstract: A multi-wavelength light source has a laser region that includes a gain medium with a reflective end facet and two or more diffraction gratings optically connected to a second end facet opposite to the reflective end facet of the gain medium, an optical amplifier configured to amplify a laser beam emitted from the reflecting end facet of the laser region and containing multiple wavelengths, the multiple wavelengths being amplified collectively, an optical demultiplexer configured to demultiplex an amplified laser beam output from the optical amplifier, and output waveguides connected to the optical demultiplexer and configured to output light beams with the multiple wavelengths.
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公开(公告)号：US20200206842A1
公开(公告)日：2020-07-02
申请号：US16594828
申请日：2019-10-07
Applicant: Fujitsu Optical Components Limited
Inventor： Kohei SHIBATA , Tatsuya ITO
Abstract: An optical module includes an optical semiconductor chip having a first surface that includes a laser beam irradiation region and a cleavage region, an optical fiber optically coupled to the first surface, and a support member having a second surface bonded to the first surface, and configured to support the optical fiber. The optical semiconductor chip has an optical signal input and output part located in the cleavage region, and the second surface is bonded to the first surface within the cleavage region.
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公开(公告)号：US10673533B2
公开(公告)日：2020-06-02
申请号：US16029775
申请日：2018-07-09
Applicant: Fujitsu Optical Components Limited
Inventor： Ryou Okabe , Toru Matsuyama
IPC: H04B10/50 , H04B10/516 , H04B10/58 , H04B10/54 , H04B10/2513 , H04J14/02
Abstract: An optical transmission apparatus and an optical transmission method are provided. In particular, an optical transmission apparatus is disclosed as being configured to add strength to a signal. The signal corresponds to a value that an input signal has, and the strength added to the signal is strength according to the value. The optical transmission apparatus is further configured to give delays to a plurality of signals that includes the signal and to convert the sum of the plurality of signals into an optical signal.
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Patent Agency Ranking
公开(公告)号：US10659154B2
公开(公告)日：2020-05-19
申请号：US16426602
申请日：2019-05-30
Applicant: Fujitsu Optical Components Limited
Inventor： Hoshihiko Toda , Toshio Ishii
IPC: H04B10/079 , G02B6/42 , H04J14/02 , H04B10/67
Abstract: An optical module has an optical amplifier that amplifies an optical signal in which multiple wavelengths are multiplexed, an optical demultiplexer that separates the multiple wavelengths from the optical signal having been amplified by the optical amplifier, a first photodetector that monitors the optical signal at an input side of the optical amplifier, a second photodetector that monitors each of the multiple wavelengths at an output side of the optical demultiplexer, and a control circuit that controls a center wavelength of a filter of the optical demultiplexer based upon a first output from the first photodetector and a second output from the second photodetector.
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公开(公告)号：US20200044739A1
公开(公告)日：2020-02-06
申请号：US16505139
申请日：2019-07-08
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: H04B10/25 , H04B10/40 , H04B10/073 , G01J4/04
Abstract: An optical device is formed on an optical IC chip. The optical device includes: an optical device circuit; a first optical waveguide that is coupled to the a first grating coupler; a second grating coupler; a polarization rotator that is coupled to the first grating coupler; a polarization beam combiner or a polarization beam splitter that is coupled to the polarization rotator and to the second grating coupler; and a second optical waveguide that is coupled to the polarization beam combiner or to the polarization beam splitter. The first optical waveguide and the second optical waveguide respectively extend to an edge of the optical IC chip.
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公开(公告)号：US10474531B2
公开(公告)日：2019-11-12
申请号：US15868048
申请日：2018-01-11
Applicant: Fujitsu Optical Components Limited
Inventor： Daisuke Matsukawa
Abstract: A processing device has a memory including a plurality of storage areas each storing a setting value and the correction frequency change unit. The correction frequency change unit is configured to decrease, when a frequency of correction by the error correction unit for a storage area that stores one of the setting values is changed to a high frequency, a frequency of correction by the error correction processing for one of the storage areas other than the storage area whose correction frequency is changed to a high frequency, and to increase, when a frequency of correction by the error correction unit for a storage area that stores one of the setting values is changed to a low frequency, a frequency of correction by the error correction processing for one of the storage areas other than the storage area whose correction frequency is changed to a low frequency.
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149.发明申请公开(公告)号：US20190280776A1
公开(公告)日：2019-09-12
申请号：US16276215
申请日：2019-02-14
Applicant: Fujitsu Optical Components Limited
Inventor： Shuntaro Makino , KOHEI SHIBATA , Suguru Akiyama
IPC: H04B10/40 , H04B10/516 , G02F1/225 , G02F1/01
Abstract: An optical transceiver device includes: an optical circuit that includes an optical modulator to generate a modulated optical signal and an optical reception circuit to convert a received optical signal into an electric signal and implemented in a rectangular optical circuit area; a driver circuit that drives the optical modulator and arranged along a first side of the optical circuit area; an amplifier circuit that converts an output signal of the optical reception circuit into a voltage signal and arranged along a second side of the optical circuit area, the second side being orthogonal to the first side; a first electrical component that is electrically coupled to the driver circuit and arranged in an area adjacent to the driver circuit; and a second electrical component that is electrically coupled to the amplifier circuit and arranged in an area adjacent to the amplifier circuit.
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公开(公告)号：US10411823B2
公开(公告)日：2019-09-10
申请号：US15970976
申请日：2018-05-04
Applicant: Fujitsu Optical Components Limited
Inventor： Koji Otsubo
Abstract: An optical transmitter includes: a plurality of laser diodes each of which outputs signal light having a wavelength that is different from a wavelength of other signal light; an optical multiplexer that is disposed adjacently to the laser diodes along a first direction, and that multiplexes the signal light output from the respective laser diodes; and a driving circuit that is disposed adjacently to the optical multiplexer along a second direction that is different from the first direction, and that drives the laser diodes. The optical multiplexer and the driving circuit are integrated.
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