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    Distributed reflector laser
    2.
    发明授权
    Distributed reflector laser 有权

    公开(公告)号：US10461503B2

    公开(公告)日：2019-10-29

    申请号：US16115453

    申请日：2018-08-28

    Applicant: FINISAR CORPORATION

    Inventor： Yasuhiro Matsui

    IPC: H01S5/00 ,  H01S3/08 ,  H01S5/12 ,  H01S3/063 ,  H01S5/028 ,  H01S5/125 ,  H01S5/14 ,  H01S5/343 ,  H01S5/0625

    Abstract: A distributed reflector (DR) laser may include a distributed feedback (DFB) region and a distributed Bragg reflector (DBR). The DFB region may have a length in a range from 30 micrometers (μm) to 100 μm and may include a DFB grating with a first kappa in a range from 100 cm−1 to 150 cm−1. The DBR region may be coupled end to end with the DFB region and may have a length in a range from 30-300 μm. The DBR region may include a DBR grating with a second kappa in a range from 150 cm−1 to 200 cm−1. The DR laser may additionally include a lasing mode and a p-p resonance frequency. The lasing mode may be at a long wavelength side of a peak of a DBR reflection profile of the DBR region. The p-p resonance frequency may be less than or equal to 70 GHz.

    Grating coupled laser for Si photonics
    4.
    发明授权
    Grating coupled laser for Si photonics 有权

    公开(公告)号：US11435522B2

    公开(公告)日：2022-09-06

    申请号：US16569486

    申请日：2019-09-12

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh ,  Shiyun Lin ,  Yasuhiro Matsui ,  Ding Wang ,  David Bruce Young

    IPC: G02B6/12

    Abstract: A grating coupled laser (GCL) includes an active section and a passive section. The passive section is butt coupled to the active section to form a butt joint with the active section. The active section includes an active waveguide. The passive section includes a passive waveguide, a transmit grating coupler, and a top cladding. The passive waveguide is optically coupled end to end with the active waveguide and includes a first portion and a second portion. The first portion of the passive waveguide is positioned between the second portion of the passive waveguide and the active waveguide. The transmit grating coupler is optically coupled to the passive waveguide and includes grating teeth that extend upward from the second portion of the passive waveguide. The top cladding is positioned directly above the first portion of the passive waveguide and is absent directly above at least some of the transmit grating coupler.

    GRATING COUPLED LASER FOR SI PHOTONICS
    6.
    发明申请
    GRATING COUPLED LASER FOR SI PHOTONICS 审中-公开

    公开(公告)号：US20200081204A1

    公开(公告)日：2020-03-12

    申请号：US16569486

    申请日：2019-09-12

    Applicant: Finisar Corporation

    Inventor： Daniel Mahgerefteh ,  Shiyun Lin ,  Yasuhiro Matsui ,  Ding Wang ,  David Bruce Young

    IPC: G02B6/42 ,  H01S5/125 ,  H01S5/343

    Abstract: A grating coupled laser (GCL) includes an active section and a passive section. The passive section is butt coupled to the active section to form a butt joint with the active section. The active section includes an active waveguide. The passive section includes a passive waveguide, a transmit grating coupler, and a top cladding. The passive waveguide is optically coupled end to end with the active waveguide and includes a first portion and a second portion. The first portion of the passive waveguide is positioned between the second portion of the passive waveguide and the active waveguide. The transmit grating coupler is optically coupled to the passive waveguide and includes grating teeth that extend upward from the second portion of the passive waveguide. The top cladding is positioned directly above the first portion of the passive waveguide and is absent directly above at least some of the transmit grating coupler.

    Bandwidth efficient dual carrier
    7.
    发明授权
    Bandwidth efficient dual carrier 有权

    公开(公告)号：US09385815B2

    公开(公告)日：2016-07-05

    申请号：US14617782

    申请日：2015-02-09

    Applicant: FINISAR CORPORATION

    Inventor： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

    IPC: H04B10/04 ,  H04B10/00 ,  H04B10/06 ,  H04B10/532 ,  H04J14/06

    CPC classification number: H04B10/532 ,  H04J14/06

    Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.

    DELAY LINE INTERFEROMETER MULTIPLEXER
    8.
    发明申请
    DELAY LINE INTERFEROMETER MULTIPLEXER 有权
    延迟线干涉仪多路复用器

    公开(公告)号：US20160018600A1

    公开(公告)日：2016-01-21

    申请号：US14709050

    申请日：2015-05-11

    Applicant: FINISAR CORPORATION

    Inventor： Yasuhiro Matsui ,  Bernd Huebner ,  Charles B. Roxlo

    IPC: G02B6/293

    CPC classification number: G02B6/29355 ,  G02B6/2938 ,  H04J14/02

    Abstract: In an embodiment, a delay line interferometer (DLI) multiplexer (MUX) includes a first stage and a second stage. The first stage includes a first DLI and a second DLI. The first DLI includes a first left input, a first right input, and a first output and has a free spectral range (FSR) that is about four times a nominal channel spacing. The second DLI includes a second left input, a second right input, and a second output and has an FSR that is about four times the nominal channel spacing. The second stage is coupled to the first stage and includes a third DLI. The third DLI includes a third left input optically coupled to the first output, a third right input optically coupled to the second output, and a third output. An FSR of the third DLI is about two times the nominal channel spacing.

    Abstract translation: 在一个实施例中，延迟线干涉仪（DLI）多路复用器（MUX）包括第一级和第二级。 第一阶段包括第一DLI和第二DLI。 第一DLI包括第一左输入，第一右输入和第一输出，并且具有约为标称通道间隔的四倍的自由光谱范围（FSR）。 第二DLI包括第二左输入，第二右输入和第二输出，并具有约为标称通道间隔的四倍的FSR。 第二阶段耦合到第一阶段并且包括第三DLI。 第三DLI包括光耦合到第一输出的第三左输入，光耦合到第二输出的第三右输入和第三输出。 第三个DLI的FSR约为标称信道间隔的两倍。

    SHORT GAIN CAVITY DISTRIBUTED BRAGG REFLECTOR LASER
    10.
    发明申请
    SHORT GAIN CAVITY DISTRIBUTED BRAGG REFLECTOR LASER 有权
    短路分布式BRAGG反射器激光器

    公开(公告)号：US20140269807A1

    公开(公告)日：2014-09-18

    申请号：US13795384

    申请日：2013-03-12

    Applicant: FINISAR CORPORATION

    Inventor： Yasuhiro Matsui

    IPC: H01S3/08

    CPC classification number: H01S5/06256 ,  H01S5/0287 ,  H01S5/0425 ,  H01S5/06251 ,  H01S5/1039 ,  H01S5/1221

    Abstract: A long wavelength, short cavity laser can include: an active region or gain cavity having a length from about 10 microns to about 150 microns; a gap region adjacent to the active region and having a gap length that is less than 30 microns or less than the length of the active region; and a distributed Bragg reflector (“DBR”) region having a grating with a kappa of at least about 200 cm−1, wherein the gap region is between the active region and the DBR region, and wherein the laser lases at a long wavelength side of a Bragg peak of the laser. The laser can have a second DBR region opposite of the first DBR region.

    Abstract translation: 长波长的短腔激光器可以包括：具有约10微米至约150微米长度的有源区或增益腔; 与所述有源区相邻并且具有小于30微米或小于所述有源区的长度的间隙长度的间隙区; 以及具有至少约200cm -1的κ的光栅的分布式布拉格反射器（“DBR”）区域，其中所述间隙区域在所述有源区域和所述DBR区域之间，并且其中所述激光器在长波长侧 的激光的布拉格峰。 激光器可以具有与第一DBR区域相对的第二DBR区域。

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