Optical coupling assemblies
Granted: May 28, 2019
Patent Number:
10302883
An optical coupling assembly includes optical fibers and a fiber coupling structure assembly that includes an active optical component (AOC) array. The AOC array includes wafer material, AOCs, and soldering pads. The fiber coupling structure assembly includes a rigid substrate that defines apertures and includes an array connection surface on which additional soldering pads are formed. The rigid substrate is fixed to the AOC array by bump joints that connect the soldering pads of the AOC…
Polarization splitters
Granted: May 28, 2019
Patent Number:
10302866
Various embodiments relate to polarization splitters. A polarization splitter may include a silicon nitride (SiN) waveguide core configured to receive an input light signal having a first polarization mode and a second polarization mode. The polarization splitter may further include a silicon (Si) slot waveguide core disposed proximate the SiN waveguide core. The Si slot waveguide core may include a tapered portion at a first end configured to couple the first polarization mode to the Si…
Rigid-flexible circuit interconnects
Granted: May 21, 2019
Patent Number:
10299389
In an example embodiment, a circuit interconnect includes a first printed circuit board (PCB), a second PCB, a spacer, and an electrically conductive solder joint. The first PCB includes a first electrically conductive pad. The second PCB includes a second electrically conductive pad. The spacer is configured to position the first PCB relative to the second PCB such that a space remains between the first PCB and the second PCB after the first electrically conductive pad and the second…
Host-equalized optical inks
Granted: May 21, 2019
Patent Number:
10298330
An embodiment includes a host-equalized optical transceiver. The host-equalized optical transceiver includes a driver analog interface, a linear laser diode driver (LLDD), and an optical transmitter. The driver analog interface is configured to interface with a host integrated circuit (IC) of a host system. The LLDD is directly electrically coupled to a host IC of the host system via the driver analog interface. The LLDD is configured to receive an equalized electrical data signal…
Chip on leadframe optical subassembly
Granted: May 21, 2019
Patent Number:
10295768
One example embodiment includes an optical subassembly (OSA). The OSA includes a leadframe circuit, an optical port, and an active optical component subassembly. The active optical component subassembly is mounted to the leadframe circuit. The optical port is mechanically coupled to the leadframe circuit.
Bidirectional communication module
Granted: May 14, 2019
Patent Number:
10291346
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…
Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition
Granted: May 14, 2019
Patent Number:
10291324
An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the…
Multi-channel transceiver with laser array and photonic integrated circuit
Granted: May 7, 2019
Patent Number:
10284301
A laser module can include: a laser chip having a plurality of laser diodes; a focusing lens optically coupled to each of the plurality of distinct laser diodes; and a photonic integrated circuit (PIC) having a plurality of optical inlet ports optically coupled to the plurality of laser diodes through the focusing lens. The laser module can include an optical isolator optically coupled to the focusing lens and PIC and positioned between the focusing lens and PIC. The laser chip can…
Individual DC and AC current shunting in optical receivers
Granted: April 23, 2019
Patent Number:
10270538
A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage…
Two-stage adiabatically coupled photonic systems
Granted: April 16, 2019
Patent Number:
10261251
In an example, a photonic system includes a Si PIC with a Si substrate, a SiO2 box formed on the Si substrate, a first layer, and a second layer. The first layer is formed above the SiO2 box and includes a SiN waveguide with a coupler portion at a first end and a tapered end opposite the first end. The second layer is formed above the SiO2 box and vertically displaced above or below the first layer. The second layer includes a Si waveguide with a tapered end aligned in two orthogonal…
Polarization independent multiplexer / demultiplexer
Granted: April 9, 2019
Patent Number:
10254477
An integrated optical component includes at least one input waveguide, at least one output waveguide; a first slab waveguide having a first refractive index, n1. The first slab waveguide may be disposed between at least one of the input waveguides and at least one of the output waveguides. The integrated optical component may further include a second slab waveguide having a second refractive index, n2. The integrated optical component may also include a third cladding slab having a third…
Surface coupled systems
Granted: March 26, 2019
Patent Number:
10243322
A system includes a surface coupled edge emitting laser that includes a core waveguide, a fan out region optically coupled to the core waveguide in a same layer of the surface coupled edge emitting laser as the core waveguide; and a first surface grating formed in the fan out region; and a photonic integrated circuit (PIC) that includes an optical waveguide and a second surface grating formed in an upper layer of the PIC, wherein the second surface grating is in optical alignment with…
Differential amplitude detector
Granted: March 26, 2019
Patent Number:
10241948
An example embodiment includes an idle state detection circuit. The idle state detection circuit includes a bias current loop, a rectifying circuit loop, a voltage translating loop, and a filter circuit. The bias current loop provides a rectifying diode a forward current such that the rectifying diode detects an alternating current (AC) signal received from a transmitter via one or more transmission nodes. The rectifying circuit loop stores differential peak to peak amplitude information…
Dispersion-compensative optical assembly
Granted: March 26, 2019
Patent Number:
10241274
An optical assembly includes a first grating device configured to: receive a light beam that includes an optical signal with a particular wavelength from a fiber; and change a propagation direction of the optical signal according to the particular wavelength of the optical signal. The optical assembly also includes a second grating device configured to: receive the optical signal outputted from the first grating device; change the propagation direction of the optical signal according to…
Etched planarized VCSEL
Granted: March 12, 2019
Patent Number:
10230215
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…
Lens device
Granted: March 12, 2019
Patent Number:
10228531
A method of aligning a lens device includes: coupling an optical free-space beam that propagates along a first direction into an access port of an optoelectronic component, the first, a second, and a third direction being mutually perpendicular; positioning the lens device inside a free-space beam path, the lens device having an adjustment lens configured to focus radiation in only the second direction; moving the lens device along the second direction to align the adjustment lens…
Integrated processor and CDR circuit
Granted: March 5, 2019
Patent Number:
10225071
A system may include a clock and data recovery circuit that includes one or more analog components. The system may also include a digital control circuit configured to control the clock and data recovery circuit. The digital control circuit and the clock and data recovery circuit may be formed on a single substrate.
Duplex mini LC connector
Granted: March 5, 2019
Patent Number:
10222556
A fiber optic connector may include a body, a first fiber ferrule, and a second fiber ferrule. The first fiber ferrule may extend in a length direction of the body from a module-side end of the body. The second fiber ferrule may extend in the length direction of the body from the module-side end of the body and may be spaced apart from the first fiber ferrule in a width direction of the body. A maximum width in the width direction of a portion of the body configured to be received in a…
Module mount interposer
Granted: February 26, 2019
Patent Number:
10218098
A module mount interposer may include one or more fastener receivers configured to mechanically couple with one or more fasteners so as to mechanically and electrically couple a module to the interposer. The module mount interposer may also include a core configured to electrically couple with the module, wherein each of the fastener receivers are mechanically coupled to the core. The module mount interposer may additionally include a solder layer electrically coupled to the core and…
Method and apparatus for characterization and compensation of optical impairments in InP-based optical transmitter
Granted: February 26, 2019
Patent Number:
10218446
A method and apparatus for characterizing and compensating optical impairments in an optical transmitter includes operating an optical transmitter comprising a first and second parent MZ, each comprising a plurality of child MZ modulators that are biased at respective initial operating points. An electro-optic RF transfer function is generated for each of the plurality of child MZ modulators. Curve fitting parameters are determined for each of the plurality of electro-optic RF transfer…
