Finisar Patent Grants

Laser carrier-on-chip device

Granted: September 7, 2021
Patent Number: 11114819
A semiconductor laser chip-on-carrier (CoC) device comprising: a semiconductor laser component comprising an electric laser terminal; a driver circuit for producing on an electric driver terminal an alternating current electric driving signal; and an electric signal conductor electrically connecting the driver terminal to the laser terminal, wherein the electric signal conductor comprises: a first printed trace which is not arranged on the semiconductor laser component and which…

Optical device and method for controlling such a device

Granted: August 3, 2021
Patent Number: 11081863
An optical device comprises a light input, a light modulating means and a light output. The optical device further comprises an optical amplification device arranged to amplify light travelling between said light modulating means and said output. The optical amplification device comprises first and second serially connected post SOA (Semiconductor Optical Amplifier) units, each comprising at least one respective serially connected post SOA segment, which device is arranged to vary a…

Pluggable transceiver retainer

Granted: August 3, 2021
Patent Number: 11079558
An optoelectronic module may include a housing enclosing at least one optical transmitter or receiver and a slider configured to move with respect to the housing. The slider may include at least one protrusion configured to engage a cage sized and shaped to receive the housing. The optoelectronic module may include a bail rotatably coupled to the housing. The bail may be configured to actuate the slider when the bail is rotated. The optoelectronic module may include a retainer including…

Pluggable transceiver retainer

Granted: July 27, 2021
Patent Number: 11073667
An optoelectronic module may include a housing enclosing at least one optical transmitter or receiver, and a slider configured to move with respect to the housing. The slider may include at least one protrusion configured to engage with a cage sized and shaped to receive the housing, and a retainer configured to engage both the slider and the housing to retain the slider with respect to the housing. The retainer may include a first protrusion sized and shaped to be positioned in a slot…

Pluggable transceiver retainer

Granted: July 27, 2021
Patent Number: 11073666
An optoelectronic module may include a housing enclosing at least one optical transmitter or receiver, a slider configured to move with respect to the housing, and a retainer configured to engage both the slider and the housing to retain the slider with respect to the housing. The slider may include a resilient tab and at least one protrusion configured to engage a cage sized and shaped to receive the housing. The retainer may include a first end portion configured to abut the resilient…

Integrated optical transceiver

Granted: May 19, 2020
Patent Number: 10659166
An integrated optical transceiver, comprising a laser component, comprising an array of VCSEL diodes formed on a laser diode substrate; a laser driving component, comprising laser diode driving circuitry formed on a laser driving circuitry substrate; a photodiode component, comprising an array of photodiodes formed on a photodiode substrate; and a photodiode driving component, comprising photodiode driving circuitry formed on a photodiode driving circuitry substrate; a first heat sink…

Etched planarized VCSEL

Granted: May 5, 2020
Patent Number: 10644482
An etched planarized VCSEL includes: an active region; a blocking region over the active region, and defining apertures therein; and conductive channel cores in the apertures, wherein the conductive channel cores and blocking region form an isolation region. A method of making the VCSEL includes: forming the active region; forming the blocking region over the active region; etching the apertures in the blocking region; and forming the conductive channel cores in the apertures of the…

Optical subassembly with detachably-coupling holder

Granted: May 5, 2020
Patent Number: 10641977
An example optoelectronic module may include an optical subassembly (OSA), an optical port block, a housing, and a holder. The OSA may be configured to convert between optical and electrical signals. The optical port block may be attached to the OSA and may be configured to optically align a fiber optic cable with the OSA. The housing may be configured to substantially enclose the OSA and the optical port block. The holder may be configured to couple the OSA and the optical port block to…

Bidirectional communication module

Granted: April 28, 2020
Patent Number: 10637603
In an example, a communication module includes an optical transmitter, an optical receiver, and a periodical filter. The optical transmitter is configured to emit an outbound optical signal. The optical receiver is configured to receive an inbound optical signal. A first frequency of the outbound optical signal is offset from a second frequency of the inbound optical signal by an amount less than a channel spacing of a multiplexer/demultiplexer implemented in an optical communication…

Light-weight on-chip signal monitor with integrated memory management and data collection

Granted: April 21, 2020
Patent Number: 10628297
Embodiments of a device and method to automatically acquire signal quality metrics in a digital communication system are disclosed. The device may include acquisition means to sample the likelihood of a digital communication signal passing through a grid of time and amplitude regions, and storage means by which such likelihood measurements may be accumulated in a computer memory array for analysis. A state machine may execute a method that controls both the acquisition means and the…

Method of manufacturing an integrated semiconductor optical waveguiding device

Granted: March 31, 2020
Patent Number: 10605989
A method of manufacturing an integrated semiconductor optical waveguiding device comprising an elongated waveguide, the method comprising: providing a material stack comprising a substrate layer, an anisotropically wet etchable conductive layer, a waveguiding core layer, an etch-guiding layer between the substrate layer and the waveguiding core layer, and InP material between the etch-guiding layer and the waveguiding core layer; etching said material stack down to and including said…

Optically enabled multi-chip modules including optical engine macros

Granted: March 17, 2020
Patent Number: 10594402
An optically enabled multi-chip module has an optical engine transceiver and a host system chip. The optical engine transceiver has an optical engine front-end and an optical engine macro. The optical engine front-end has multiple laser diodes, laser driver circuitry electrically interfaced with each of the laser diodes, multiple photodiodes, amplifier circuitry electrically interfaced with each of the photodiodes, and at least one optical element optically positioned between the laser…

Screwless heat sink attachment

Granted: March 10, 2020
Patent Number: 10585252
An optoelectronic system includes an optoelectronic module and a heat sink. The optoelectronic module includes a housing and first and second housing slide locks. The first and second housing slide locks extend outward from opposite sides of the housing. The heat sink includes a heat sink bottom, first and second heat sink legs, and first and second heat sink slide locks. The first and second heat sink legs extend downward from opposite ends of the heat sink bottom. The first and second…

Thermal management structures for optoelectronic modules

Granted: March 3, 2020
Patent Number: 10582611
An example embodiment includes optoelectronic module. The optoelectronic module may include a lens assembly, a module board, heat-generating components, and a thermally conductive plate. The lens assembly may be secured to the module board. The module board may include a printed circuit board (PCB). The heat-generating components may be mounted to the PCB. The thermally conductive plate may be secured to a surface of the module board. The thermally conductive plate may define an opening…

Rapid out-of-band signal communication in optical components

Granted: March 3, 2020
Patent Number: 10581529
An example embodiment includes an optoelectronic module. The optoelectronic module may be configured to transmit out-of-band (OOB) data as an average optical power difference between optical signals. The optoelectronic module may include a first optical source, a second optical source, and an optical power control device. The first optical source may be configured to generate a first optical signal including first channel payload data on a first optical channel. The second optical source…

Feedback biased vertical cavity surface emitting laser

Granted: March 3, 2020
Patent Number: 10581224
A VCSEL may include a bottom DBR mirror and a top DBR mirror above the bottom DBR mirror. The VCSEL may include a vertical optical cavity located within a portion of the bottom and top DBR mirrors. The vertical optical cavity may be configured to emit an optical signal. The VCSEL may include a lateral feedback optical cavity located within a different portion of the bottom and the top DBR mirrors configured to receive a feedback bias signal configured to bias the lateral feedback optical…

Thermally interfacing chip on glass assembly

Granted: February 25, 2020
Patent Number: 10571637
In one example embodiment, an optoelectronic assembly includes an electronic substrate, a transparent component coupled on a first side of the electronic substrate, and a first component coupled to a second side of the electronic substrate opposite the first side. The electronic substrate, the transparent component, and the first component may define a hermetically sealed enclosure. A laser array or a receiver array may be mechanically coupled to the transparent component inside of the…

Adiabatically coupled optical system

Granted: February 25, 2020
Patent Number: 10571630
An optical system includes a silicon (Si) substrate, a buried oxide (BOX) layer formed on the substrate, a silicon nitride (SiN) layer formed above the BOX layer, and a SiN waveguide formed in the SiN layer. In some embodiments, the optical system may additionally include an interposer waveguide adiabatically coupled to the SiN waveguide to form a SiN-interposer adiabatic coupler that includes at least the tapered section of the SiN waveguide, the optical system further including at…

Component alignment

Granted: February 4, 2020
Patent Number: 10551578
A system may include a substrate and a lens component. The substrate may include pads and solder protuberances. Each solder protuberance may be located on a pad. The lens component may define grooves sized to receive at least a portion of the solder protuberances. The lens component may be positioned relative to the substrate such that at least a portion of each solder protuberance is positioned within the grooves.

Ferrule-to-lens latch mechanism

Granted: February 4, 2020
Patent Number: 10551579
A ferrule-to-lens latch mechanism includes a cover movable with respect to a housing of an optical assembly between an open position in which a cavity defined by the housing is visible and a closed position in which the cavity is covered by the cover. A lens is positioned in the cavity and has one or more guide pins which are visible when the cover is in the open position prior to mating a ferrule to the lens. A spring clip coupled to the housing and positioned in the cavity is…