Type of Non-reciprocity in Fiber Sagnac Interferometer Induced by Geometric Phases

Abstract

The non-reciprocity of Sagnac interferometer provides ultra-high sensitivity for parameter estimation and offers a wide range of applications, especially for optical fiber sensing. In this work, we study a new type of non-reciprocity existed in optical fiber Sagnac interferometer where the polarization dependent loss is taken into consideration. In particular, this non-reciprocity is irrelevant to the physical effects that being considered in previous studies, which originates from the geometric phases induced by continuous-weak-measurement. In consequence, it has a unique phenomenon of sudden phase transition, which may open a new way for the future design of high precision optical fiber sensors.

arXiv comment10 pages, 11 figures. The wrong author list in v1 has been corrected

References in corpus (2)

• Optical telecom networks as weak quantum measurements with post- selection
• Topological transition in measurement-induced geometric phases

Cited by in corpus (2)

• Toward Incompatible Quantum Limits on Multiparameter Estimation
• Robustness of optic-fiber-based weak value amplification against amplitude-type noise