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    INDEPENDENT CONTROL OF EMISSION WAVELENGTH AND OUTPUT POWER OF A SEMICONDUCTOR LASER
    1.
    发明申请
    INDEPENDENT CONTROL OF EMISSION WAVELENGTH AND OUTPUT POWER OF A SEMICONDUCTOR LASER 审中-公开
    辐射波长的独立控制和半导体激光的输出功率

    公开(公告)号：WO2016144831A1

    公开(公告)日：2016-09-15

    申请号：PCT/US2016/021075

    申请日：2016-03-04

    Applicant: APPLE INC.

    Inventor： AUDET, Ross M. ,  ARBORE, Mark Alan ,  BISMUTO, Alfredo ,  BIDAUX, Yves ,  MULLER, Antoine Jean André

    IPC: H01S5/0625 ,  H01S5/06 ,  H01S5/026 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/125 ,  H01S5/227

    CPC classification number: H01S5/0683 ,  H01S5/0224 ,  H01S5/02453 ,  H01S5/026 ,  H01S5/0261 ,  H01S5/0607 ,  H01S5/0612 ,  H01S5/06256 ,  H01S5/06832 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/125 ,  H01S5/141 ,  H01S5/227

    Abstract: Methods for driving a tunable laser with integrated tuning elements are disclosed. The methods can include modulating the tuning current and laser injection current such that the laser emission wavelength and output power are independently controllable. In some examples, the tuning current and laser injection current are modulated simultaneously and a wider tuning range can result. In some examples, one or both of these currents is sinusoidally modulated. In some examples, a constant output power can be achieved while tuning the emission wavelength. In some examples, the output power and tuning can follow a linear relationship. In some examples, injection current and tuning element drive waveforms necessary to achieve targeted output power and tuning waveforms can be achieved through optimization based on goodness of fit values between the targeted and actual output power and tuning waveforms.

    Abstract translation: 公开了用于驱动具有集成调谐元件的可调谐激光器的方法。 该方法可以包括调制调谐电流和激光注入电流，使得激光发射波长和输出功率是独立可控的。 在一些示例中，调谐电流和激光注入电流被同时调制，并且可以产生更宽的调谐范围。 在一些示例中，这些电流中的一个或两个被正弦调制。 在一些示例中，可以在调谐发射波长的同时实现恒定的输出功率。 在一些示例中，输出功率和调谐可以遵循线性关系。 在一些示例中，可以通过基于目标和实际输出功率与调谐波形之间的拟合值的优化来实现实现目标输出功率和调谐波形所需的注入电流和调谐元件驱动波形。

    WAVELENGTH AGILE MULTIPLEXING
    2.
    发明申请
    WAVELENGTH AGILE MULTIPLEXING 审中-公开

    公开(公告)号：WO2022066724A1

    公开(公告)日：2022-03-31

    申请号：PCT/US2021/051494

    申请日：2021-09-22

    Applicant: APPLE INC.

    Inventor： ARBORE, Mark Alan ,  BISMUTO, Alfredo

    IPC: G02B6/293 ,  H04J14/02

    Abstract: Methods and systems concerning demultiplexing and multiplexing light in optical multiplexing systems are disclosed herein. An optical multiplexing system may include a number of light emitters and a number of associated waveguides. Light emitted from each of the number of light emitters may travel through the associated waveguide and may enter a multiplexer, where a multiplexing operation may occur. At least one of the number of light emitters may be configured to emit light with multiple wavelengths. Such a light emitter may further be associated with a demultiplexer to demultiplex the light with multiple wavelengths before the light reaches a multiplexer. After a demultiplexing operation, the demultiplexed light may be directed to multiple waveguides and the multiple waveguides may guide the demultiplexed light to a multiplexer.

    TUNABLE ECHELLE GRATING
    3.
    发明申请
    TUNABLE ECHELLE GRATING 审中-公开

    公开(公告)号：WO2022066321A1

    公开(公告)日：2022-03-31

    申请号：PCT/US2021/046359

    申请日：2021-08-17

    Applicant: APPLE INC.

    Inventor： TU, Yongming ,  BISMUTO, Alfredo

    IPC: G02B6/12 ,  G02B6/293 ,  G02F1/01

    Abstract: Configurations for a tunable Echelle grating are disclosed. The tunable Echelle grating may include an output waveguide centered in a waveguide array, with input waveguides on both sides of the output waveguide. A metal tuning pad may be located over the slab waveguide and may be heated to induce a temperature change in the slab waveguide. By increasing the temperature of the propagation region of the slab waveguide, the index of refraction may shift, thus causing the peak wavelength of the channel to shift. This may result in an optical component capable of multiplexing multiple light sources in an energy efficient manner while maintaining a small form factor.

    INTEGRATED EDGE-GENERATED VERTICAL EMISSION LASER
    5.
    发明申请
    INTEGRATED EDGE-GENERATED VERTICAL EMISSION LASER 审中-公开

    公开(公告)号：WO2022040468A1

    公开(公告)日：2022-02-24

    申请号：PCT/US2021/046772

    申请日：2021-08-19

    Applicant: APPLE INC.

    Inventor： HILL, Jeffrey T. ,  BISMUTO, Alfredo ,  SARMIENTO, Tomas

    IPC: H01S5/187

    Abstract: Configurations for an edge-generated vertical emission laser that vertically emits light and fabrication methods of the edge-generated vertical emission laser are disclosed. The edge-generated vertical emission laser may include a distributed feedback (DFB) laser structure, a grating coupler, and contact layers. Light may propagate through the DFB laser structure, approximately parallel to the top surface of the edge-generated vertical emission laser and be directed by the grating coupler toward the top surface of the edge-generated vertical emission laser. The light may vertically emit from the edge-generated vertical emission laser approximately perpendicular to the top surface of the edge-generated vertical emission laser. Additionally, the contact layers may be n-metal and p-metal, which may be located on the same side of the edge-generated vertical emission laser. These features of the edge-generated vertical emission laser may facilitate ease of testing and increased options for packaging.

    OPTICAL SYSTEM WITH PHASE SHIFTING ELEMENTS
    7.
    发明申请
    OPTICAL SYSTEM WITH PHASE SHIFTING ELEMENTS 审中-公开

    公开(公告)号：WO2022066322A1

    公开(公告)日：2022-03-31

    申请号：PCT/US2021/046367

    申请日：2021-08-17

    Applicant: APPLE INC.

    Inventor： TU, Yongming ,  BISMUTO, Alfredo

    IPC: G02F1/01 ,  G02B6/12 ,  G02B6/122

    Abstract: Configurations for an optical system with phase shifting elements are disclosed. The optical system may include a first waveguide that provides light to a second waveguide, which may be a slab waveguide. A phase shifting element may be disposed on the slab waveguide and may be heated to induce a temperature change in the slab waveguide. By increasing the temperature of the propagation region of the slab waveguide, the index of refraction of the propagation region of the slab waveguide may shift, thus causing the index of refraction of light propagating through the propagation region to shift, thus shifting the phase of the light. This may result in an optical component capable of phase shifting light for reducing coherent noise while being energy efficient and maintaining a small form factor.

    VERNIER EFFECT DBR LASERS INCORPORATING INTEGRATED TUNING ELEMENTS
    8.
    发明申请
    VERNIER EFFECT DBR LASERS INCORPORATING INTEGRATED TUNING ELEMENTS 审中-公开
    VERNIER效应DBR激光器并入集成的调谐元件

    公开(公告)号：WO2016176364A1

    公开(公告)日：2016-11-03

    申请号：PCT/US2016/029619

    申请日：2016-04-27

    Applicant: APPLE INC.

    Inventor： AUDET, Ross M. ,  ARBORE, Mark Alan ,  BISMUTO, Alfredo ,  BIDAUX, Yves ,  TARDY, Camille ,  GRESCH, Tobias ,  MÜLLER, Antoine Jean André

    IPC: H01S5/06 ,  H01S5/0625 ,  H01S5/12 ,  H01S5/125 ,  H01S5/34

    CPC classification number: H01S5/06256 ,  H01S5/0425 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/06837 ,  H01S5/1206 ,  H01S5/1209 ,  H01S5/1218 ,  H01S5/125 ,  H01S5/3401

    Abstract: Disclosed is a Vernier effect DBR laser that has uniform laser injection current pumping along the length of the laser. The laser can include one or more tuning elements, separate from the laser injection element, and these tuning elements can be used to control the temperature or modal refractive index of one or more sections of the laser. The refractive indices of each diffraction grating can be directly controlled by temperature changes, electro optic effects, or other means through the one or more tuning elements. With direct control of the temperature and/or refractive indices of the diffraction gratings, the uniformly pumped Vernier effect DBR laser can be capable of a wider tuning range. Additionally, uniform pumping of the laser through a single electrode can reduce or eliminate interfacial reflections caused by, for example, gaps between metal contacts atop the laser ridge, which can minimize multi-mode operation and mode hopping.

    Abstract translation: 公开了一种游标效应DBR激光器，其沿着激光器的长度具有均匀的激光注入电流泵浦。 激光器可以包括与激光注入元件分开的一个或多个调谐元件，并且这些调谐元件可用于控制激光器的一个或多个部分的温度或模态折射率。 每个衍射光栅的折射率可以通过温度变化，电光效应或通过一个或多个调谐元件的其它方式直接控制。 通过直接控制衍射光栅的温度和/或折射率，均匀泵浦的游标效应DBR激光器能够具有更宽的调谐范围。 此外，通过单个电极的激光均匀泵浦可以减少或消除由例如激光脊顶部的金属触点之间的间隙引起的界面反射，这可使多模操作和模式跳跃最小化。

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