The interaction between surface plasmon polariton (SPP) and acousto-optic tunable filter was studied. Acoustic wave was used to induce core mode to cladding mode coupling and eventually resulted in SPP generation at the fiber cladding surface. The interaction between optical fiber core mode, cladding mode and SPP mode is formulated by using mode coupling theory. The dielectric constant of SPP and light reflection coefficient on fiber surface was calculated using Nlayer model. Experimental studies were also carried out to verify the theory and simulation results. The existence of SPP at fiber surface boosted the acoustic assisted optical energy coupling from fiber core mode to TM and HE cladding mode but not to TE cladding mode, which agrees with the theoretical and simulation results. It provides a motion-free, high speed and full-electronic solution for generation and control of SPP with high flexibility and tunability.

Date Published: 13 March 2015
PDF: 7 pages
Proc. SPIE 9369, Photonic Instrumentation Engineering II, 936908 (13 March 2015); doi: 10.1117/12.2078993

Published in SPIE Proceedings Vol. 9369:
Photonic Instrumentation Engineering II
Yakov G. Soskind; Craig Olson, Editor(s)