Work

Frequency locking for asymmetric Mach-Zehnder interferometer coupler-based Brillouin lasers

Year: 2025

Type: article

Abstract: As essential components in inertial navigation, Brillouin fiber-optic gyroscopes (BFOGs) still suffer from low coupling efficiency, complex frequency locking, and large size. This paper presents an asymmetric Mach-Zehnder interferometer coupler (AMZIC)-based resonator to address these challenges. A dedicated frequency-locking scheme is proposed for the distinctive butterfly-shaped Brillouin spectrum. Experimental results demonstrate a low threshold of 27.44 mW, a short resonator (5.9 m), and a polarization extinction ratio of 31 dB. Stable frequency locking was maintained over 4000 s, confirming the system's robustness and potential for practical BFOG applications.

Source: Optics Express

DOI: 10.1364/oe.580511

Authors: Shilei Zhang, Chenchen Liu, Kaifei Li, Fuyu Gao, Xiaxiao Wang, Ningfang Song, Xiaobin Xu

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China

Award: G2171548065