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Sensing Enhancement at an Exceptional Point in a Nonreciprocal Fiber Ring Cavity

Sensors operating at an exceptional point (EP) are sufficiently sensitive to small perturbations. In this article, we demonstrate that an EP enhances sensing in the frame of a fiber ring cavity. An air gap inserted into a fiber ring cavity couples the clockwise and counterclockwise propagating modes, leading to eigenfrequency splitting. The EP was achieved in a nonreciprocity cavity constructed using an isolator. A fiber displacement sensor was realized by monitoring the splitting strength in the spectrum, which depends on the width of the air gap. The experimental results showed that the sensitivity of the sensor at the EP was sufficiently enhanced as compared to that in the reciprocal cavity.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.38 No.8 April 15 2020

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 2511 - 2515

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FIBER SENSOR
EXCEPTIONAL POINT
WHISPERING GALLERY MODE

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Haotian Wang, Jun Guo, Jianing Zhang, Wei Zhou, Yishan Wang, Xiang Wu, Deyuan Shen

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