title: All-optical power equalization based on a two-section reflective semiconductor optical amplifier.
abstract: A simple all-optical power equalization scheme based on a single two-section reflective semiconductor optical amplifier (RSOA) is presented. Double optical path and non-uniform injection current density in the two sections easily saturate the RSOA and suppress pattern effect, thereby significantly reducing packet-to-packet power fluctuation while maintaining better signal quality. The mechanism of the two-section RSOA-based power equalizer is investigated and it is indicated that the two-section RSOA biased at proper current density functions as three cascaded SOAs, including a preamplifying SOA, a gain-saturated SOA and a third SOA. The performance dependence on driven current and structural parameters is also studied.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. lrhuang@mail.hust.edu.cn
authors.forename: Lirong
authors.initials: L
authors.lastname: Huang
authors.forename: Wei
authors.initials: W
authors.lastname: Hong
authors.forename: Guiying
authors.initials: G
authors.lastname: Jiang
mesh_terms: D000669:Amplifiers, Electronic; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D012031:Refractometry / Q000295:instrumentation*