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公开(公告)号：US11799267B2
公开(公告)日：2023-10-24
申请号：US17874383
申请日：2022-07-27
发明人： Kosuke Okawa , Naoki Itabashi , Tomoya Saeki , Hiroshi Hara
IPC分类号： H05K1/02 , H01S5/0237 , H01S5/02315 , H05K3/34 , H05K1/18
CPC分类号： H01S5/0237 , H01S5/02315 , H05K1/0218 , H05K1/18 , H05K3/34
摘要： An optical module includes a circuit board having a through hole for the lead terminal, a signal wiring connected to the lead terminal, a ground layer providing a reference potential, an opening through which the ground layer is exposed, and a bonding material connecting the ground layer to the metallic base. The lead terminal extends in a first direction, and the circuit board and the signal wiring extend in a second direction. When the circuit board is viewed from the first direction, the opening overlaps with the signal wiring, or when the opening does not overlap with the signal wiring, a first distance between the signal wiring and a closest point of the opening to the signal wiring is smaller than a second distance between the closest point and an edge of the circuit board.
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公开(公告)号：US11362736B2
公开(公告)日：2022-06-14
申请号：US17236455
申请日：2021-04-21
发明人： Munetaka Kurokawa , Hiroshi Hara
摘要： An optical transmitter module includes a semiconductor laser device, optical modulator, temperature adjusting device which includes a substrate, a first installation part and a second installation part, a package having a bottom surface opposite to a back surface of the substrate, the package housing the semiconductor laser device, the optical modulator, and the temperature adjusting device; and a middle block disposed between a first temperature controlling element a the second temperature controlling element, the middle block having a back surface directly or indirectly fastened to a principal surface of the substrate.
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公开(公告)号：US20210336702A1
公开(公告)日：2021-10-28
申请号：US17236455
申请日：2021-04-21
发明人： Munetaka Kurokawa , Hiroshi Hara
摘要： An optical transmitter module includes a semiconductor laser device, optical modulator, temperature adjusting device which includes a substrate, a first installation part and a second installation part, a package having a bottom surface opposite to a back surface of the substrate, the package housing the semiconductor laser device, the optical modulator, and the temperature adjusting device; and a middle block disposed between a first temperature controlling element a the second temperature controlling element, the middle block having a back surface directly or indirectly fastened to a principal surface of the substrate.
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公开(公告)号：US20200304212A1
公开(公告)日：2020-09-24
申请号：US16890847
申请日：2020-06-02
发明人： Kazuaki MII , Hiroshi Hara , Fumihiro Nakajima
摘要： A wavelength de-multiplexing system that receives a wavelength multiplexed signal and generates electrical signals corresponding to the optical signals is disclosed. The optical receiver module includes a lens, a lens unit, and an optical de-multiplexer (O-DeMux). The lens converts the wavelength multiplexed signal into a quasi-collimated beam. The lens unit narrows a diameter of the quasi-collimated beam. The O-DeMux de-multiplexes the narrowed quasi-collimated beam coming from the lens unit by wavelength selective filters (WSFs) each having optical distances from the lens unit different from each other.
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公开(公告)号：US10727953B2
公开(公告)日：2020-07-28
申请号：US16256060
申请日：2019-01-24
发明人： Kazuaki Mii , Hiroshi Hara
摘要： A package for an optical receiver module is disclosed. The package includes a housing having electrically conductive walls including a rear and a pair of side walls, and a feed-through provided in the rear wall. The feed-through includes an internal portion, and an external portion protruding from the internal portion. The internal portion has a top face and a back face, the top face including ground lines, the back face including transmission lines with signal lines and ground lines.
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公开(公告)号：US10826622B2
公开(公告)日：2020-11-03
申请号：US16890847
申请日：2020-06-02
发明人： Kazuaki Mii , Hiroshi Hara , Fumihiro Nakajima
摘要： A wavelength de-multiplexing system that receives a wavelength multiplexed signal and generates electrical signals corresponding to the optical signals is disclosed. The optical receiver module includes a lens, a lens unit, and an optical de-multiplexer (O-DeMux). The lens converts the wavelength multiplexed signal into a quasi-collimated beam. The lens unit narrows a diameter of the quasi-collimated beam. The O-DeMux de-multiplexes the narrowed quasi-collimated beam coming from the lens unit by wavelength selective filters (WSFs) each having optical distances from the lens unit different from each other.
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公开(公告)号：US10527804B2
公开(公告)日：2020-01-07
申请号：US16245303
申请日：2019-01-11
发明人： Hiroshi Hara
IPC分类号： G02B6/42 , H01S5/022 , H01L23/495 , G02B6/43
摘要： An optical module that provides a bridge substrate for carrying a driving signal from a wiring substrate to a laser diode (LD) element is disclosed. The optical module provides a carrier, first and second assemblies, and the bridge substrate. The first assembly, which includes the LD element, stacks a first compensating substrate and a semiconductor substrate on the carrier, where the semiconductor substrate includes the LD element. The second assembly stacks a second compensating substrate and the wiring substrate on the carrier. The first compensating substrate is made of a material same with a material of the wiring substrate and has a thickness same with that of the wiring substrate. The second compensating substrate is made of a material same with a material of the semiconductor substrate and has a thickness same with that of the semiconductor substrate.
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公开(公告)号：US20190238236A1
公开(公告)日：2019-08-01
申请号：US16256060
申请日：2019-01-24
发明人： Kazuaki MII , Hiroshi Hara
摘要： A package for an optical receiver module is disclosed. The package includes a housing having electrically conductive walls including a rear wall and a pair of side walls, and a feed-through provided in the rear wall. The feed-through includes an internal portion having an upper rear face and a lower rear face, and an external portion protruding from the upper rear face and the lower rear face outwardly and having a top face and/or a back face continuous to the upper rear face and/or the lower rear face of the internal portion, a first top face, a second back face, and a pair of side faces, the rear face and the side faces connecting the first top face with the second back face, the first top face including DC lines, the second back face including transmission lines, and the transmission lines.
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公开(公告)号：US10281653B2
公开(公告)日：2019-05-07
申请号：US14909710
申请日：2015-06-09
发明人： Masanobu Kawamura , Fumihiro Nakajima , Kazushige Oki , Hiroshi Hara , Yasushi Fujimura , Kazunori Tanaka , Michio Suzuki
摘要： An optical receiver module that receives a wavelength multiplexed light and a process to assemble the optical receiver module are disclosed. The optical receiver module provides a coupling unit to collimate the wavelength multiplexed light and a device unit that installs an optical de-multiplexer and photodiode elements within a housing. The front wall of the housing through which the wavelength multiplexed light passes is polished in a right angle with respect to the bottom of the housing.
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公开(公告)号：US20170134099A1
公开(公告)日：2017-05-11
申请号：US15347193
申请日：2016-11-09
发明人： Hiroshi Hara , Masanobu Kawamura , Takahiro Saito
CPC分类号： H04B10/66 , G02B6/29367 , G02B6/2938 , G02B6/4214 , G02B6/4215 , G02B27/0955 , H04J14/02
摘要： An optical receiver module that receives a wavelength-multiplexed optical signal is disclosed. The optical receiver module includes a first lens, an optical de-multiplexer, second lenses, and photodiodes. The first lens forms a beam waist of the wavelength-multiplexed optical signal output therefrom. The optical de-multiplexer de-multiplexes the wavelength-multiplexed optical signal into optical signals depending on wavelengths thereof and is installed so as to make optical paths for respective optical signals different from each other. The second lenses concentrate the optical signals onto the respective photodiodes. In the optical receiver module, the beam waist of the wavelength-multiplexed optical signal is set in a halfway between a longest path and a shortest path from the first lens to the second lenses.
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