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    OPTICAL FIBER FILTER WITH ULTRA-WIDE TUNING RANGE
    32.
    发明公开
    OPTICAL FIBER FILTER WITH ULTRA-WIDE TUNING RANGE 审中-公开

    公开(公告)号：US20230367074A1

    公开(公告)日：2023-11-16

    申请号：US18360640

    申请日：2023-07-27

    申请人： II-VI DELAWARE, INC.

    发明人： Yongkang HU ,  Ketang TAN

    IPC分类号： G02B6/293

    CPC分类号： G02B6/29395 ,  G02B6/29361 ,  G02B6/29304 ,  G02B6/29313 ,  G02B6/29389

    摘要： An optical fiber filter has an ultra-wide tuning range and includes a two-dimensional mechanical rotating mirror, a collimating and beam expanding system, and two grating. An input fiber emits a multi-wavelength optical signal into the rotating mirror, which reflects the signal to the system to form collimated beams. In turn, the collimated beams are incident on the gratings that disperse the light of different wavelengths to different angles. Lights of different diffraction angles are input into an output fiber by adjusting the rotating mirror. The rotating mirror can be used to switch between gratings of different wavebands to tune optical wavelengths in an ultra-wide range.

    DUAL GRATING-COUPLED LASERS
    33.
    发明公开
    DUAL GRATING-COUPLED LASERS 审中-公开

    公开(公告)号：US20230361533A1

    公开(公告)日：2023-11-09

    申请号：US18355103

    申请日：2023-07-19

    申请人： II-VI DELAWARE, INC.

    发明人： Shiyun LIN ,  Daniel MAHGEREFTEH

    IPC分类号： H01S5/187 ,  G02B6/124 ,  G02B6/12 ,  G02B6/293 ,  H01S5/10 ,  H01S5/026 ,  H01S5/00

    CPC分类号： H01S5/187 ,  G02B6/124 ,  G02B6/12004 ,  G02B6/2935 ,  H01S5/1028 ,  H01S5/026 ,  H01S5/005 ,  G02B2006/12147 ,  G02B2006/12121

    摘要： In an example embodiment, a system includes a first grating-coupled laser (GCL) that includes a first laser cavity optically coupled to a first transmit grating coupler configured to redirect horizontally-propagating first light, received from the first laser cavity, vertically downward and out of the first GCL. The system also includes a second GCL that includes a second laser cavity optically coupled to a second transmit grating coupler configured to transmit second light vertically downward and out of the second GCL. The system also includes a photonic integrated circuit (PIC) that includes a first receive grating coupler optically coupled to a first waveguide and configured to receive the first light and couple the first light into the first waveguide. The PIC also includes a second receive grating coupler optically coupled to a second waveguide and configured to receive the second light and couple the second light into the second waveguide.

    Bottom emitting VCSEL
    35.
    发明授权
    Bottom emitting VCSEL 有权

    公开(公告)号：US11811197B2

    公开(公告)日：2023-11-07

    申请号：US16858135

    申请日：2020-04-24

    申请人： II-VI DELAWARE, INC.

    发明人： James K. Guenter ,  Hao Chen

    IPC分类号： H01S5/183 ,  H01S5/343

    CPC分类号： H01S5/18305 ,  H01S5/18308 ,  H01S5/18358 ,  H01S5/18361 ,  H01S5/34313 ,  H01S2304/04

    摘要： A VCSEL can include: a substrate that passes light therethrough; a phase matching layer over a top mirror stack; a first metal layer over the phase matching layer; and an end metal region over the first metal layer. The phase matching layer and first metal layer have a cooperative thickness to provide reflectivity of at least a predetermined reflectivity threshold for the emission wavelength. A method of making a VCSEL can include: providing a substrate; forming a first mirror stack above the substrate; forming an active region above the first mirror stack; and forming a reflective end above the active region, the reflective end having a phase matching layer and a first metal layer. The phase matching layer and first metal layer have a combined thickness for the reflective end to have a reflectivity of at least a predetermined reflectivity threshold for an emission wavelength of the VCSEL.

    POLARIZATION-MAINTAINING WAVELENGTH SELECTIVE SWITCH FOR FREE-SPACE OPTICAL COMMUNICATION
    37.
    发明公开
    POLARIZATION-MAINTAINING WAVELENGTH SELECTIVE SWITCH FOR FREE-SPACE OPTICAL COMMUNICATION 审中-公开

    公开(公告)号：US20230344542A1

    公开(公告)日：2023-10-26

    申请号：US18335779

    申请日：2023-06-15

    申请人： II-VI Delaware, Inc.

    发明人： Ian G. CLARKE ,  Massimo DI BLASIO

    IPC分类号： H04J14/02 ,  H04B10/11 ,  H04B10/2507

    CPC分类号： H04J14/0212 ,  H04B10/11 ,  H04B10/2507

    摘要： A free-space optical communication system has a conversion assembly, a fiber array, and a wavelength selective switch (WSS) assembly. The conversion assembly converts circular polarization states of incoming optical signals to linear polarization states and converts linear polarization states to circular polarization states for outgoing optical signals. The fiber array has polarization-maintaining (PM) optical fibers arranged in optical communication between the conversion assembly and the WSS assembly to preserve the linear polarization states of the optical signals. The WSS assembly has free-space optics, such as dispersion element and beam-steering element, with optical axes arranged relative to the PM optical fibers. The WSS assembly selectively switches WDM channels of the optical signals relative to the PM optical fibers. Fast and slow axes of the PM optical fibers are aligned to the optical axes of the free-space optics.

    PARTIALLY ETCHED REFLECTION-MODIFICATION LAYER
    38.
    发明公开
    PARTIALLY ETCHED REFLECTION-MODIFICATION LAYER 审中-公开

    公开(公告)号：US20230333285A1

    公开(公告)日：2023-10-19

    申请号：US18316881

    申请日：2023-05-12

    申请人： II-VI Delaware, Inc.

    发明人： Dmitri IAZIKOV ,  Thomas W. MOSSBERG ,  Christoph M. GREINER ,  David S. Alavi

    IPC分类号： G02B1/11 ,  G02B5/30

    CPC分类号： G02B1/11 ,  G02B5/3083

    摘要： An optical element includes a transmissive layer arranged on a substrate and made up of discrete volumes of first and second optical media. The layer is between the substrate and another optical medium. The volumes are arranged so that, averaged over a wavelength’s distance of an incident optical signal, the effective reflectivities of the two surfaces of the transmissive layer and the effective double-pass phase delay through the transmissive layer are substantially constant across the transmissive layer. The reflectivities and phase delay result in net power reflectivity that differs from that of the substrate in direct contact with the other optical medium. The transmissive layer can be arranged as an anti-reflection layer.