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    Directly Modulated Laser for PON Applications
    11.
    发明申请
    Directly Modulated Laser for PON Applications 有权
    用于PON应用的直接调制激光器

    公开(公告)号：US20130308959A1

    公开(公告)日：2013-11-21

    申请号：US13897282

    申请日：2013-05-17

    Applicant: FINISAR CORPORATION

    Inventor： Yasuhiro Matsui

    IPC: H01S5/20 ,  H04B10/50

    CPC classification number: H01S5/0085 ,  B82Y20/00 ,  H01S5/0035 ,  H01S5/02276 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/06226 ,  H01S5/06256 ,  H01S5/1221 ,  H01S5/20 ,  H01S5/34 ,  H01S5/3415 ,  H01S5/3416 ,  H01S5/34306 ,  H01S5/34313 ,  H01S5/3434 ,  H04B10/504

    Abstract: In an embodiment, a distributed Bragg reflector (DBR) laser includes a gain section and a passive section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60 nanometers (nm). The lower SCH is below the active region and has a thickness of at least 60 nm. The passive section is coupled to the gain section, the passive section having a DBR in optical communication with the active region.

    Abstract translation: 在一个实施例中，分布式布拉格反射器（DBR）激光器包括增益部分和无源部分。 增益部分包括有源区，上分离限制异质结构（SCH）和下SCH。 上层SCH高于有源区，其厚度至少为60纳米（nm）。 较低的SCH低于有源区，并具有至少60nm的厚度。 无源部分耦合到增益部分，无源部分具有与有源区域光学通信的DBR。

    Distributed reflector laser
    12.
    发明授权
    Distributed reflector laser 有权

    公开(公告)号：US10944241B2

    公开(公告)日：2021-03-09

    申请号：US16596699

    申请日：2019-10-08

    Applicant: Finisar Corporation

    Inventor： Yasuhiro Matsui

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

    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.

    DISTRIBUTED REFLECTOR LASER
    13.
    发明申请
    DISTRIBUTED REFLECTOR LASER 审中-公开

    公开(公告)号：US20200044415A1

    公开(公告)日：2020-02-06

    申请号：US16596699

    申请日：2019-10-08

    Applicant: Finisar Corporation

    Inventor： Yasuhiro Matsui

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

    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.

    Delay line interferometer multiplexer
    15.
    发明授权
    Delay line interferometer multiplexer 有权

    公开(公告)号：US09405071B2

    公开(公告)日：2016-08-02

    申请号：US14709050

    申请日：2015-05-11

    Applicant: FINISAR CORPORATION

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

    IPC: G02F1/01 ,  G02F1/035 ,  G02B6/293 ,  H04J14/02

    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.

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