Abstract

We proposed a new readout scheme for an ultrasensitive gyroscope, which uses the physics of the exceptional points of a PT-symmetric system to enhance the device sensitivity. In particular, we demonstrated that the full-width at half-maximum linewidth (Δω_FWHM) of the light exiting the ring resonator system is proportional to the square root of the rotation rate (Ω). Moreover, we designed a PT-symmetric gyroscope, kept at the exceptional point (at rest) with two 100-μm-radius rings, obtaining a theoretical Δω_FWHM of 3.37×10⁴ rad/s for an angular velocity of 100 °/h. One algorithm capable to keep the system at the exceptional point and another one to identify the direction of rotation are also proposed.

© 2018 IEEE

High-sensitivity real-splitting anti-PT-symmetric microscale optical gyroscope

Martino De Carlo, Francesco De Leonardis, Luciano Lamberti, and Vittorio M. N. Passaro
Opt. Lett. 44(16) 3956-3959 (2019)

Ultrasensitive micro-scale parity-time-symmetric ring laser gyroscope

J. Ren, H. Hodaei, G. Harari, A. U. Hassan, W. Chow, M. Soltani, D. Christodoulides, and M. Khajavikhan
Opt. Lett. 42(8) 1556-1559 (2017)

Dissipative coupling in a Bragg-grating-coupled single resonator with Fano resonance for anti-PT-symmetric gyroscopes

Martino De Carlo, Francesco De Leonardis, Francesco Dell’Olio, Yunhong Ding, and Vittorio M. N. Passaro
Opt. Express 32(4) 5932-5942 (2024)

Unidirectional light emission in PT-symmetric microring lasers

Jinhan Ren, Yuzhou G. N. Liu, Midya Parto, William E. Hayenga, Mohammad P. Hokmabadi, Demetrios N. Christodoulides, and Mercedeh Khajavikhan
Opt. Express 26(21) 27153-27160 (2018)

Parity-time-symmetry-breaking gyroscopes: lasing without gain and subthreshold regimes

David D. Smith, Hongrok Chang, Luke Horstman, and Jean-Claude Diels
Opt. Express 27(23) 34169-34191 (2019)