TY - JOUR

T1 - Bistable lasing in parity-time symmetric coupled fiber rings

AU - Smirnov, Sergey V.

AU - Makarenko, Maxim O.

AU - Suchkov, Sergey V.

AU - Churkin, Dmitry

AU - Sukhorukov, Andrey A.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - We propose a parity-time (PT) symmetric fiber laser composed of two coupled ring cavities with gains and losses, which operates both in PT-symmetric and symmetry-broken regimes depending on the static phase shifts. We perform analytical and numerical analysis by the transfer matrix method taking into account gain saturation and predict laser bistability in the PT-symmetric regime in contrast to a symmetry-broken single-mode operation. In the PT-broken regime, the generation power counterintuitively increases with an increase of the cavity losses.

AB - We propose a parity-time (PT) symmetric fiber laser composed of two coupled ring cavities with gains and losses, which operates both in PT-symmetric and symmetry-broken regimes depending on the static phase shifts. We perform analytical and numerical analysis by the transfer matrix method taking into account gain saturation and predict laser bistability in the PT-symmetric regime in contrast to a symmetry-broken single-mode operation. In the PT-broken regime, the generation power counterintuitively increases with an increase of the cavity losses.

KW - EXCEPTIONAL POINTS

KW - LASERS

KW - OPTICS

UR - http://www.scopus.com/inward/record.url?scp=85045006581&partnerID=8YFLogxK

U2 - 10.1364/PRJ.6.000A18

DO - 10.1364/PRJ.6.000A18

M3 - Article

AN - SCOPUS:85045006581

VL - 6

SP - A18-A22

JO - Photonics Research

JF - Photonics Research

SN - 2327-9125

IS - 4

ER -