TY - JOUR
T1 - Tunable nonreciprocal reflection and its stability in a non-PT-symmetric plasmonic resonators coupled waveguide systems
AU - He, Zhihui
AU - Zhao, Jianlin
AU - Lu, Hua
N1 - Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - We investigated optical responses in a non-PT-symmetric plasmonic resonator coupled waveguide by using developed coupled mode theory and the finite-difference time-domain simulation. A nonreciprocal reflection (NR) can be achieved by tuning the direct coupling and the dissipation, which can be used to design nonreciprocal optical devices. The results show that the direct coupling can reduce the nonreciprocal degree of reflection, and especially, greatly discrepant dissipation in the two resonators can give rise to obvious NR. Moreover, the simulation results are in good agreement with the theoretical results. These results will pave a way for realization of stable nonreciprocal devices.
AB - We investigated optical responses in a non-PT-symmetric plasmonic resonator coupled waveguide by using developed coupled mode theory and the finite-difference time-domain simulation. A nonreciprocal reflection (NR) can be achieved by tuning the direct coupling and the dissipation, which can be used to design nonreciprocal optical devices. The results show that the direct coupling can reduce the nonreciprocal degree of reflection, and especially, greatly discrepant dissipation in the two resonators can give rise to obvious NR. Moreover, the simulation results are in good agreement with the theoretical results. These results will pave a way for realization of stable nonreciprocal devices.
UR - http://www.scopus.com/inward/record.url?scp=85076737727&partnerID=8YFLogxK
U2 - 10.7567/1882-0786/ab5e33
DO - 10.7567/1882-0786/ab5e33
M3 - 文章
AN - SCOPUS:85076737727
SN - 1882-0778
VL - 13
JO - Applied Physics Express
JF - Applied Physics Express
IS - 1
M1 - 012009
ER -