Hewlett Packard Enterprise Development LP

Sudharsanan Srinivasan

Di Liang

Raymond G Beausoleil

Geza Kurczveil

Zhihong Huang

Stanley Cheung

Yuan Yuan

Examples described herein relate to an optical device with an integrated light-emitting structure to generate light and a waveguide integrated capacitor to monitor light. The light-emitting structure may emit light upon the application of electricity to the optical device. The waveguide integrated capacitor may be formed under the light-emitting structure to monitor the light emitted by the light-emitting structure. The waveguide integrated capacitor includes a waveguide region carrying at least a portion of the light. The waveguide region includes one or more photon absorption sites causing the generation of free charge carriers relative to an intensity of the light confined in the waveguide region resulting in a change in the conductance of the waveguide region.

Optical device having a light-emitting structure and a waveguide integrated capacitor to monitor light

Examples described herein relate to a ring resonator. The ring resonator may include an annular waveguide having a waveguide base and a waveguide core narrower than the waveguide base. Further, the ring resonator may include an outer contact region comprising a first-type doping and disposed annularly and at least partially surrounding an outer annular surface of the waveguide base. Furthermore, the ring resonator may include an inner contact region comprising a second-type doping and disposed annularly contacting an inner annular surface of the waveguide base. Moreover, the ring resonator may include an annular detector region disposed annularly at a distance from and covering at least a portion of a surface of the waveguide core and contacting the outer contact region.

Ring resonator with integrated detector for monitoring light comprising an annular detection region that is physically isolated from a waveguide core

Examples described herein relate to an optical coupler. The optical coupler may include a first optical waveguide base layer, a second optical waveguide base layer, an insulating layer disposed over at least a portion of both the first optical waveguide base layer and the second optical waveguide base layer, and a semiconductor material layer disposed over the insulating layer. Overlapping portions of the first optical waveguide base layer, the insulating layer, and the semiconductor material layer form a first optical waveguide, and overlapping portions of the second optical waveguide base layer, the insulating layer, and the semiconductor material layer form a second optical waveguide. Moreover, the optical coupler may include a plurality of metal contacts to receive one or more first biasing voltages to operate one of the first optical waveguide base layer and the second optical waveguide base layer in an accumulation mode.

Optical coupler

Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including an optical transmitter configured to transmit optical signals. The optical transmitter includes a first optical source and a second optical source coupled to the first optical source and injection seeded by the first optical source. The optical transmitter further includes an output coupler, the second optical source coupled to the optical coupler via an output waveguide and configured to emit light having multiple different wavelengths through the output waveguide. In some implementations, the second optical source is self-injection seeded.

Injection seeding of a comb laser

Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including an optical transmitter configured to transmit optical signals. The optical transmitter includes a first optical source coupled to an input waveguide and configured to emit light having different wavelengths through the input waveguide. The optical transmitter includes a Mach-Zehnder interferometer that includes a first arm and a second arm. The MZI further includes a first optical coupler configured to couple the emitted light from the input waveguide to the first and second arms and an array of two or more second optical sources coupled to the first arm. Each of the two or more second optical sources are configured to be injection locked to a different respective wavelength of the emitted light transmitted from the first optical source. The MZI further includes a second optical coupler configured to combine the emitted light from the first and second arms after propagating therethrough.

Low drive voltage multi-wavelength transmitter

Examples described herein relate to an optical system. In some examples, the optical system may include a light-conducting medium and a first optical device to transmit an optical signal over the light-conducting medium. Further, the optical system may include a second optical device coupled to the light-conducting medium to receive an optical signal transmitted by the first optical device. In some examples, at least one of the first optical device, the light-conducting medium, and the second optical device may include an in-situ capacitive structure to detect light intensity. Moreover, the optical system may include a monitoring circuit electrically coupled to the in-situ capacitive structure to generate an electrical signal indicative of the light intensity detected by the in-situ capacitive structure.

Growing community of inventors

Santa Barbara, CA, United States of America

Sudharsanan Srinivasan