Goleta, CA, United States
Goleta, CA, United States
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Patent
Aurrion, Inc. | Date: 2016-08-08

Described herein are photonic systems and devices including a optical interface unit disposed on a bottom side of a photonic integrated circuit (PIC) to receive light from an emitter of the PIC. A top side of the PIC includes a flip-chip interface for electrically coupling the PIC to an organic substrate via the top side. An alignment feature corresponding to the emitter is formed with the emitter to be offset by a predetermined distance value; because the emitter and the alignment feature are formed using a shared processing operation, the offset (i.e., predetermined distance value) may be precise and consistent across similarly produced PICs. The PIC comprises a processing feature to image the alignment feature from the bottom side (e.g., a hole). A heat spreader layer surrounds the optical interface unit and is disposed on the bottom side of the PIC to spread heat from the PIC.


Patent
Aurrion, Inc. | Date: 2016-06-06

Embodiments of the invention describe apparatuses, systems, and methods of thermal management for photonic integrated circuits (PICs). Embodiments include a first device and a second device comprising including waveguides, wherein the first and second devices have different thermal operating conditions. A first region is adjacent to a waveguide of the first device, wherein its optical mode is to be substantially confined by the first region, and wherein the first region has a first thermal conductivity to dissipate heat based on the thermal operating condition of the first device. A second region is adjacent to a waveguide of the second device, wherein its optical mode is to be substantially confined by the second region, and wherein the second region has a second thermal conductivity to dissipate heat based on the thermal operating condition of the second device. In some embodiments, thermal cross talk is reduced without significantly affecting optical performance.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 1000.00K | Year: 2015

The interconnect networks of datacenters and extreme scale high performance computers (HPC) will require a bandwidth density, in terms of connections per area, that cannot practically be met with todays optical transceiver technology. The push for high-radix connectivity in combination with an ever increasing amount of data transported on these advanced networks requires increasing numbers of fiber connections which are projected to scale beyond what can be accommodated at the network switch front panel interface. To keep pace with big data and HPC, optical transceiver technologies must evolve from discrete component solutions with data channels transmitted over parallel fibers, to integrated photonic solutions which use wavelength division multiplexing (WDM) to transmit multiple, high data rate channels on a single fiber. In this way, cost-effective optical transceivers with unprecedented bandwidth densities can be realized to keep pace with the connectivity needs of datacenter and extreme scale HPC. In this program, Aurrion proposes to partner with IBM to develop low thermal-sensitivity, high bandwidth-density optical receivers which will enable the high speed (>100Gb/s) and high interconnectivity advanced network topologies that will be needed for datacenter and extreme scaling computing. Building on previous work where Aurrion and IBM demonstrated a single channel 60 Gb/s digital optical receiver, phase 1 will focus on developing an athermal WDM receiver design compatible its high speed photodiodes and IBM electronics. In subsequent phases, full receivers, incorporating the designed demultiplexors, photodiode arrays, and electronic drivers can be demonstrated. If successful, the technology developed in this program will be commercialized to address datacenter and HPC market needs.


Patent
Aurrion, Inc. | Date: 2016-03-24

An optical system can automatically lock an adjustable spectral filter to a first wavelength of an incoming light signal, and can automatically filter an additional incoming light signal at the first wavelength. A tunable filter can have a filtering spectrum with an adjustable peak wavelength and increasing attenuation at wavelengths away from the adjustable peak wavelength. The tunable filter can receive first input light, having a first wavelength, and can spectrally filter the first input light to form first output light. A detector can detect at least a fraction of the first output light. Circuitry coupled to the detector and the tunable filter can tune the tunable filter to maximize a signal from the detector and thereby adjust the peak wavelength to match the first wavelength. The tunable filter further can receive second input light and spectrally filter the second input light at the first wavelength.


Patent
Aurrion, Inc. | Date: 2015-08-12

Embodiments describe high-efficiency optical waveguide transitions - i.e., creating heterogeneous transitions between Si and III-V semiconductor regions or devices with minimal reflections. This is advantageous for III-V device performance, e.g. for an on-chip lasers achieving lower relative intensity noise (RIN) and lower phase noise by avoiding reflections, higher gain and reduced gain-ripple from an semiconductor optical amplifier (SOA) by avoiding internal reflections in the SOA. Furthermore, in some embodiments, generated photocurrent can be used as a monitor signal for control purposes, thereby avoiding the use of separate tap-monitor photodetectors, which provide additional link loss.


Patent
Aurrion, Inc. | Date: 2016-09-28

An optical system (200) can automatically lock an adjustable spectral filter to a first wavelength of an incoming light signal (104), and can automatically filter an additional incoming light signal (114) at the first wavelength. A tunable filter (202) can have a filtering spectrum with an adjustable peak wavelength and increasing attenuation at wavelengths away from the adjustable peak wavelength. The tunable filter (202) can receive first input light, having a first wavelength, and can spectrally filter the first input light (104) to form first output light (106). A detector (110) can detect at least a fraction of the first output light (106). Circuitry (112) coupled to the detector (110) and the tunable filter (202) can tune the tunable filter to maximize a signal from the detector and thereby adjust the peak wavelength to match the first wavelength. The tunable filter (202) further can receive second input light (114) and spectrally filter the second input light at the first wavelength.


Patent
Aurrion, Inc. | Date: 2016-04-06

Described herein are lasers comprising an output port to output an optical signal, a plurality of waveguide segments (210) forming an optical cavity length, and a resonant optical cavity comprising the optical cavity length, a gain medium included in the resonant optical cavity to amplify the optical signal, and a heating element (220) disposed near at least two of the plurality of waveguide segments, the heating element controllable to adjust the phase of the optical signal by heating the waveguide segments. Described herein are optical devices comprising a first plurality of ports to output a plurality of optical signals, a second plurality of ports to receive the plurality of optical signals, and a plurality of coupling waveguides. The plurality of waveguide may comprise a pair of adjacent waveguides separated by a first distance, each of the pair of adjacent waveguides comprising a different width.


Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object.


Patent
Aurrion, Inc. | Date: 2016-05-06

The wavelength response of an arrayed waveguide grating can be tuned, in accordance with various embodiments, using a beam sweeper including one or more heaters to shift a lateral position of light focused by the beam sweeper at an interface of the beam sweeper with an input free propagation region of the arrayed waveguide grating.


Described herein are methods, systems, and apparatuses to utilize an electro-optic modulator including one or more heating elements. The modulator utilizes one or more heating elements to control an absorption or phase shift of the modulated optical signal. At least the active region of the modulator and the one or more heating elements of the modulator are included in a thermal isolation region comprising a low thermal conductivity to thermally isolate the active region and the one or more heating elements from a substrate of the PIC.

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