Ring waveguide based integrated photonics optical gyroscope with balanced detection scheme
AssigneeAnello Photonics, Inc.
InventorMario Paniccia
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to integrated photonics-based optical gyroscopes with silicon nitride (SiN) waveguide-based microresonators. SiN microresonators are fabricated either on a fused silica platform or on a silicon substrate with oxide cladding. A narrow linewidth high-Q laser is hybridly integrated on a silicon photonics platform. The laser is tuned with a first SiN microresonator, and the rotational sensing component of the gyroscope comprises another SiN microresonator. The silicon photonics front-end chip has components for a balanced detection scheme to cancel noise in the optical signal coming back from the rotational sensing component.
Claims25
An optical gyroscope fabricated as an high-sensitivity integrated photonics chip, comprising:
- a first portion of the integrated photonics chip comprising waveguide-based optical components that launches narrow linewidth laser light to a second portion of the integrated photonics chip;
- and
- a rotation sensing element in the second portion of the integrated photonics chip that receives the narrow linewidth laser light from the first portion, wherein the narrow linewidth of the laser light dictates a quality factor of the rotation sensing element,
- wherein the first portion and the second portion of the integrated photonics chip are packaged together on a common platform.
Dependencies are inferred from the claim text.