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System architecture for integrated photonic optical gyroscope

An optical gyroscope and integrated photon technology, applied in Sagnac effect gyroscopes, gyroscopes/steering sensing devices, optics, etc., can solve problems such as expensive, difficult to assemble, and difficult to expand mass production

Pending Publication Date: 2022-07-29
ANELLO PHOTONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] These FOGs can have very high precision, but at the same time, they are large in size, very expensive, and difficult to assemble since the device is built on discrete optical components that require precise alignment
Typically, manual alignment is involved, which is difficult to scale up to mass production

Method used

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  • System architecture for integrated photonic optical gyroscope
  • System architecture for integrated photonic optical gyroscope
  • System architecture for integrated photonic optical gyroscope

Examples

Experimental program
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Embodiment Construction

[0046] Aspects of the present disclosure relate to the integration of compact ultra-low loss waveguide chips with other system-level integrated photonic components for optical gyroscope applications. System integration is done with mass fabrication in mind to facilitate mass production of integrated photonic optical gyroscopes.

[0047] figure 1 A high-level architecture 100 showing a typical fiber optic gyroscope based on the Sagnac effect. The architecture involves a laser source 110 sending an optical signal to a polarization maintaining (PM) fiber coil 124 via intermediate system components. Intermediate system components include optical isolator 112 , polarizer 118 , and phase modulators 120 and 122 . Polarizer 118 and phase modulators 120 and 122 may be lithium niobate (LiNbO 3 ) part of the Multifunction Integrated Optical Chip (MIOC) 116 . Furthermore, even though the fiber optic coil 124 is shown as having only one loop for clarity, in an actual device there may b...

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Abstract

The present disclosure relates to system-level integration of lasers, electronic devices, integrated photon-based optical components, and sensing chips. A novel waveguide design on an integrated photonic chip acting as a front-end chip to which the transmit chip is coupled ensures accurate detection of phase changes in fiber optic coils or sensing chips with waveguide coils or ring resonators. When the laser is coupled into the integrated photonic chip, the strip waveguide is designed to mainly select a TE mode instead of a TM mode. Multiple mode selection filters based on multimode interference (MMI) filters, serpentine structures, or other types of waveguide-based mode selection structures are introduced in a system architecture. In addition, an injection region is introduced around the waveguide and other optical components to block unwanted / stray light from entering the waveguide and to block optical signals from leaking from the waveguide.

Description

technical field [0001] The present disclosure relates to system-level integration of integrated photonic-based optical gyroscopes. Background technique [0002] A gyroscope (sometimes also called a "gyroscope") is a device capable of sensing angular velocity. Gyroscopes can be mechanical or optical, and can vary in accuracy, performance cost, and size. Applications include but are not limited to military, aircraft navigation, robotics, self-driving cars, virtual reality, augmented reality, gaming, and more. Optical gyroscopes generally have the highest performance and are based on interferometry and the Sagnac effect (a phenomenon encountered in interferometry caused by rotation). Because optical gyroscopes do not have any moving components, optical gyroscopes have advantages over mechanical gyroscopes as they withstand shock, vibration, and The effect of temperature changes. The most common optical gyroscope is the fiber optic gyroscope (FOG). The construction of a FOG...

Claims

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Application Information

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IPC IPC(8): G01C19/72
CPCG02B2006/12142G02B2006/12109G02B6/126G02B2006/12097G02B2006/12061G02B2006/12147G02B6/2726G01C19/721H01S5/0085H01S5/4012G01C19/727G02B6/12019
Inventor 马里奥·帕尼西亚谭清
Owner ANELLO PHOTONICS INC