公开(公告)号：US20180166847A1

公开(公告)日：2018-06-14

申请号：US15892562

申请日：2018-02-09

Applicant: RANOVUS INC.

Inventor： Bin CAO ,  Dylan LOGAN ,  Douglas J. S. BECKETT ,  Rong CHEN ,  Andrew Peter KNIGHTS

IPC: H01S3/102 ,  H01S3/083

CPC classification number: H01S3/1028 ,  G02F1/011 ,  G02F1/0121 ,  G02F1/0147 ,  G02F2203/15 ,  G02F2203/21 ,  H01S3/083

Abstract: A device and method for tuning a ring resonator using self-heating stabilization is provided. A light source is controlled to produce an optical signal, input to an optical ring resonator, at a power where self-heating shifts a resonance wavelength of the optical ring resonator by at least 10 picometers, the self-heating comprising absorption in the optical ring resonator of optical power from a received optical signal. Prior to using the optical ring resonator at least one of modulate and filter the optical signal at the optical ring resonator, a heater of the optical ring resonator is controlled to an operating temperature at which the resonance wavelength of the optical ring resonator is greater than a respective wavelength of the optical signal.

公开(公告)号：US20170139236A1

公开(公告)日：2017-05-18

申请号：US14939086

申请日：2015-11-12

Applicant: RANOVUS INC.

Inventor： Bin CAO ,  Douglas J. S. BECKETT ,  Dylan LOGAN ,  Juergen HAUENSCHILD

IPC: G02F1/01 ,  G02B6/293

CPC classification number: G02F1/011 ,  G02B6/29338 ,  G02B6/29395 ,  G02F1/0121 ,  G02F1/3132 ,  G02F2201/58 ,  G02F2203/15 ,  H04B10/5057 ,  H04B10/572

Abstract: An apparatus, system and method of resonance wavelength alignment for ring modulators is provided which includes: an optical input bus configured to convey a given optical input signal having a given optical frequency; an optical ring modulator configured to: receive and modulate the input signal from the input bus; an optical output bus configured to convey a modulated optical signal from the ring; a first optical tap on the input bus configured to sample the input signal; a second optical tap configured to sample the modulated signal; a controller in communication with the ring, the first tap and the second tap, the controller configured to: determine a current insertion loss of the ring from respective signals received from both the first tap and the second tap; and, control the ring in a feedback loop with the current insertion loss until the current insertion loss comprises a given insertion loss.

公开(公告)号：US20170229837A1

公开(公告)日：2017-08-10

申请号：US15018575

申请日：2016-02-08

Applicant: RANOVUS INC.

Inventor： Bin CAO ,  Dylan LOGAN ,  Douglas J. S. BECKETT ,  Rong CHEN ,  Andrew Peter KNIGHTS

IPC: H01S3/102 ,  H01S3/083

CPC classification number: H01S3/1028 ,  G02F1/011 ,  G02F1/0121 ,  G02F1/0147 ,  G02F2203/15 ,  G02F2203/21 ,  H01S3/083

Abstract: A device and method for tuning a ring resonator using self-heating stabilization is provided. A light source is controlled to produce an optical signal, input to an optical ring resonator, at a power where self-heating shifts a resonance wavelength of the optical ring resonator by at least 10 picometers, the self-heating comprising absorption in the optical ring resonator of optical power from a received optical signal. Prior to using the optical ring resonator at least one of modulate and filter the optical signal at the optical ring resonator, a heater of the optical ring resonator is controlled to an operating temperature at which the resonance wavelength of the optical ring resonator is greater than a respective wavelength of the optical signal.

公开(公告)号：US20170122804A1

公开(公告)日：2017-05-04

申请号：US14925468

申请日：2015-10-28

Applicant: RANOVUS INC.

Inventor： Bin CAO ,  Dylan LOGAN

IPC: G01J1/44 ,  G01J1/04

CPC classification number: G01J1/44 ,  G01J1/0425 ,  G01J1/0429 ,  G01J2001/4466 ,  H04B10/6911

Abstract: An avalanche photodiode in a photonic integrated circuit with a waveguide optical sampling device is provided. Specifically, disclosed herein is a device which includes: an avalanche photodiode (APD) comprising a light input, an electrical output and a gain control input; a waveguide configured to convey on optical signal to the light input of the APD; an optical sampling device on the waveguide configured to sample an input light level of the optical signal, the waveguide and at least a portion of the optical sampling device formed from a photonic integrated circuit (PIC); and, a controller in communication with the optical sampling device and the gain control input, the controller configured to control a bias voltage to the gain control input of the APD based on the input light level of the optical signal received at the optical sampling device.