Freedom Photonics LLC

University of California

Jonathon Barton

Milan L Mashanovitch

Leif Johansson

John E Bowers

Jock T Bovington

Jared Bauters

Daniel Jacob Blumenthal

Martijn Heck

Michael Davenport

In various embodiments, a monolithic integrated transmitter, comprising an on-chip laser source and a modulator structure capable of generating advanced modulation format signals based on amplitude and phase modulation are described.

Chip-based advanced modulation format transmitter

A method for realizing a semiconductor waveguide and an ultra-low-loss dielectric waveguide disposed on the same substrate is disclosed. The method includes forming a partial dielectric waveguide structure on the substrate, wherein the dielectric waveguide is annealed to reduce hydrogen incorporation, and wherein the top cladding of the dielectric waveguide is only partially formed by a first dielectric layer. A second substrate comprising a semiconductor layer having a second dielectric layer disposed on its top surface is bonded to the first substrate such that the first and second dielectric layers collectively form the complete top cladding for the dielectric waveguide. The second substrate is then removed and the semiconductor layer is patterned to define the semiconductor waveguide core.

Integrated dielectric waveguide and semiconductor layer and method therefor

Various embodiments of a coherent receiver including a widely tunable local oscillator laser are described herein. In some embodiments, the coherent receiver can be integrated with waveguides, optical splitters and detectors to form a monolithic optical hetero/homodyne receiver. In some embodiments, the coherent receiver can demodulate the full phase information in two polarizations of a received optical signal over a range of optical wavelengths.

Monolithic widely-tunable coherent receiver

Growing community of inventors

Santa Barbara, CA, United States of America

Jonathon Barton