title: Influencing factors on erbium-doped polymer waveguide amplifier.
abstract: We used fundamental rate equations and power propagation equations to simulate the gain factors of Er(3+)-doped polymer excited at 980 nm. The results of the calculations indicate close relationships between the gain and Er3+ concentration, pump and signal absorption cross-sections, waveguide dimension, and metastable state lifetime of the states 4/13/2. When the signal absorption cross section doubles, the gain will increase threefold. The radiative lifetime of Er3+ in inorganic materials is much longer (milliseconds) than in the polymer (microseconds). If the lifetime of the states 4/13/2 decreases one level, there must be a corresponding increase in pump power so that the gain remains at the same level.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Zhang
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: AiHua
authors.initials: A
authors.lastname: Wu
authors.forename: XiZhen
authors.initials: X
authors.lastname: Zhang
authors.forename: Gong
authors.initials: G
authors.lastname: Chen
authors.forename: Xu
authors.initials: X
authors.lastname: Sun
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Darming
authors.initials: D
authors.lastname: Zhang