We studied the loss compensation of surface plasmon polaritons (SPPs) with InGaAsP quantum wells at telecom wavelength. The quantum wells are buried in the vicinity of a thin Au film. The propagation length of short-range SPPs increases drastically with the gain coefficient of quantum wells, generated by a forward bias. The elongation of SPP propagation is experimentally observed via long-range SPPs, which strongly couple with the short-range SPPs. This study paves a way for electrically manipulated amplification of SPPs in plasmonic circuits.
© 2010 Optical Society of America
Original Manuscript: June 23, 2010
Manuscript Accepted: August 9, 2010
Published: September 8, 2010
Xuejin Zhang, Yicen Li, Te Li, Shuh Ying Lee, Chengang Feng, Libo Wang, and Ting Mei, "Gain-assisted propagation of surface plasmon polaritons via electrically pumped quantum wells," Opt. Lett. 35, 3075-3077 (2010)