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Ultrafast and low power dynamically tunable plasmon induced transparency in dual ring cavities coupled MDM plasmonic waveguide system

B. WANG1,2,* , Y. LING2, Q. ZENG1, L. XIONG1, H. L V1, C. XU3, J. DU1, H. YU1,*

Affiliation

  1. School of Physics and Electronic information Engineering, Hubei Engineering University, Xiaogan 432000, People's Republic of China
  2. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
  3. Department of Physics, New Mexico State University, Las Cruces, NM 88001, United States of America

Abstract

We theoretically and numerically investigate an ultrafast and low power d ynamically tunable plasmon induced transparency (PIT) in dual ring cavities side coupled with a metal dielectric metal (MDM) plasmonic waveguide system. With dynamically tuning the propagation phase of the plasmonic waveguide, π phase shift of the transmis sion spectrum in the PIT system is achieved under excitation of a pump light with an intensity as low as 5.83 MW/cm 2 . The group delay is controlled between 0.19 and 0.68 ps. This work provides a simple approach for designing ultrafast and tunable PIT devic es and has potential applications in ultrafast optical switching, ultrasensitive sensor and light storage..

Keywords

Plasmon induced transparency (PIT), Graphene, Optical Kerr effect, Ring resonators, Plasmonic waveguide.

Citation

B. WANG, Y. LING, Q. ZENG, L. XIONG, H. L V, C. XU, J. DU, H. YU, Ultrafast and low power dynamically tunable plasmon induced transparency in dual ring cavities coupled MDM plasmonic waveguide system, Optoelectronics and Advanced Materials - Rapid Communications, 13, 7-8, July-August 2019, pp.415-425 (2019).

Submitted at: Dec. 5, 2018

Accepted at: Aug. 20, 2019