title: Gain-assisted propagation of surface plasmon polaritons via electrically pumped quantum wells.
abstract: 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.
authors.affiliation: Nanophotonics Laboratory, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Xuejin
authors.initials: X
authors.lastname: Zhang
authors.forename: Yicen
authors.initials: Y
authors.lastname: Li
authors.forename: Te
authors.initials: T
authors.lastname: Li
authors.forename: Shuh Ying
authors.initials: SY
authors.lastname: Lee
authors.forename: Chengang
authors.initials: C
authors.lastname: Feng
authors.forename: Libo
authors.initials: L
authors.lastname: Wang
authors.forename: Ting
authors.initials: T
authors.lastname: Mei