Monitor photodiode (MPD) submount for vertical mounting and alignment of monitoring photodiodes

    公开(公告)号:US11057112B1

    公开(公告)日:2021-07-06

    申请号:US16737414

    申请日:2020-01-08

    Abstract: The present disclosure is generally directed to a monitor photodiode (MPD) submount for use in optical transceivers that includes a body with a conductive trace pattern disposed on multiple surfaces of the same to allow for vertical mounting of an associated MPD and simplified electrical interconnection with TOSA circuitry without the necessity of electrical interconnection. The MPD submount includes a body defined by a plurality of sidewalls. At least one surface of the body provides a mounting surface for coupling to and supporting an MPD. The MPD submount further includes a conductive trace pattern that provides at least one conductive path that is disposed on the mounting surface and on at least one adjoining sidewall. The portion of the at least one conductive path disposed on the adjoining sidewall extends substantially transverse relative to the surface defining the transceiver/transmitter substrate when the MPD submount is coupled to the same.

    Optical demultiplexer with truncated profile and an optical transceiver module implementing same

    公开(公告)号:US11320598B2

    公开(公告)日:2022-05-03

    申请号:US16693364

    申请日:2019-11-24

    Abstract: The present disclosure is generally directed to an optical demultiplexer for use in an optical transceiver module having a truncated profile/shape to increase tolerance and accommodate adjacent optical components. In more detail, the optical demultiplexer comprises a body with at least one truncated corner at the input end. The at least one truncated corner allows the optical demultiplexer to be disposed/mounted, e.g., directly, on a densely populated transceiver substrate, e.g., a printed circuit board (PBC), and provide additional tolerance/space for mounting of circuitry and/or components within the region that would normally be occupied by corner(s) of the optical demultiplexer body. The at least one truncated corner may be introduced in a post-production step, e.g., via cut & polishing, or introduced during formation of the optical demultiplexer using, for instance, photolithography techniques.

    Receptacle configuration to support on-board receiver optical subassembly (ROSA)

    公开(公告)号:US10884201B2

    公开(公告)日:2021-01-05

    申请号:US16053398

    申请日:2018-08-02

    Abstract: The present disclosure is generally directed to an on-board ROSA arrangement where a fiber receptacle element, optical components such as optical de-multiplexer (e.g., an arrayed waveguide grating (AWG)), turning mirror, photodiodes and light receiving chip are mounted to a common substrate. The fiber receptacle element includes a body that defines a slot to at least partially receive an end of the substrate and mount thereto. The body of the fiber receptacle further includes an aperture that extends through the body to receive an optical fiber and/or associated connector and align the same with ROSA components mounted on a surface of the substrate. The fiber receptacle body may be solid, e.g., formed from a single, monolithic piece of material, and may be manufactured from metal, plastic or other suitably rigid material.

    Fiber holder for use with optical subassembly modules

    公开(公告)号:US11698497B2

    公开(公告)日:2023-07-11

    申请号:US17192062

    申请日:2021-03-04

    CPC classification number: G02B6/4209 G02B6/4215 G02B6/4246 H04B10/40 H04B10/60

    Abstract: An optical fiber holder is disclosed herein that includes at least one confinement slot for routing intermediate optical fibers within a housing of an optical assembly module, and preferably, a plurality of confinement slots for maintaining a target/nominal fiber bending radius for one or more intermediate optical fibers within the housing. Preferably, the optical fiber holder is disposed within the housing of an optical subassembly between an optical component, e.g., a TOSA arrangement and/or ROSA arrangement, and optical coupling receptacles, e.g., LC coupling receptacles, for optically coupling with external fibers for sending and/or receiving optical signals.

    Component bridge for increasing mounting surface area on feedthrough device and an optical subassembly implementing same

    公开(公告)号:US11411650B2

    公开(公告)日:2022-08-09

    申请号:US16751817

    申请日:2020-01-24

    Abstract: The present disclosure is generally directed to a component bridge that couples to a feedthrough device to provide additional component mounting surface area within a TOSA housing, and preferably, within a hermetically-sealed TOSA housing. The component bridge includes a body that defines a component mounting surface to couple to electrical components, e.g., one or more filtering capacitors, and a notched portion to provide an accommodation groove. The component bridge includes at least one projection/leg for coupling to a mounting surface of a feedthrough device. The accommodation groove of the component bridge allows for other electrical components, e.g., RF traces, to be patterned/disposed on to the mounting surface and extend at least partially through the accommodation groove while remaining electrically isolated from the same. Accordingly, the component bridge further increases available component mounting surface area for existing feedthrough devices without necessity of re-design and/or modification.

    Optical turning mirror with angled output interface to increase coupling efficiency and a multi-channel optical subassembly using same

    公开(公告)号:US10859775B1

    公开(公告)日:2020-12-08

    申请号:US16561555

    申请日:2019-09-05

    Abstract: In general, the present disclosure is directed to an optical turning mirror for receiving channel wavelengths along a first optical path and reflecting the same towards a fiber or photodetector (PD) without the necessity of disposing a highly reflective layer to increase reflectivity. In more detail, the optical turning mirror includes a substantially transparent body, e.g., capable of passing at least 80% of incident wavelengths, that defines an input region with integrated focus lens(es) for receiving channel wavelengths along a first optical path and a reflective surface disposed opposite the input region to direct/launch received channel wavelengths along a second optical path towards an output interface having an angled light-transmissive surface, with the second optical path extending substantially transverse relative to the first optical path.

    Heatsink with graphene coating and an optical transmitter or transceiver implementing same

    公开(公告)号:US11054592B2

    公开(公告)日:2021-07-06

    申请号:US16693361

    申请日:2019-11-24

    Abstract: The present disclosure is generally directed to a housing for use with optical transceivers or transmitters that includes integrated heatsinks with a graphene coating to increase thermal dissipation during operation. In more detail, an embodiment of the present disclosures includes a housing that defines at least first and second sidewalls and a cavity disposed therebetween. The first and/or second sidewalls can include integrated heatsinks to dissipate heat generated by optical components, e.g., laser diodes, laser diode drivers, within the cavity of the housing. The integrated heatsinks can include at least one layer of graphene disposed thereon to increase thermal performance, and in particular, to decrease thermal resistance of the heatsink and promote heat dissipation.

    Transmitter optical subassembly (TOSA) with laser diode driver (LDD) circuitry mounted to feedthrough of TOSA housing

    公开(公告)号:US10948671B2

    公开(公告)日:2021-03-16

    申请号:US16295586

    申请日:2019-03-07

    Abstract: The present disclosure is generally directed to a multi-channel TOSA arrangement with a housing that utilizes a feedthrough device with at least one integrated mounting surface to reduce the overall dimensions of the housing. The housing includes a plurality of sidewalls that define a hermetically-sealed cavity therebetween. The feedthrough device includes a first end disposed in the hermetically-sealed cavity of the housing and a second end extending from the cavity away from the housing. The feedthrough device provides the at least one integrated mounting surface proximate the first end within the hermetically-sealed cavity. At least a first laser diode driver (LDD) chip mounts to the at least one integrated mounting surface of the feedthrough device. A plurality of laser arrangements are also disposed in the hermetically-sealed cavity proximate the first LDD chip and mount to, for instance, a LD submount supported by a thermoelectric cooler.

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