Characterization of nonlinear switching in a figure-of-eight fiber laser using frequency-resolved optical gating

Abstract

Abstract-The measurement technique of frequency-resolved optical gating is applied to determine the nonlinear switching characteristics of a passively modelocked figure-of-eight erbiumdoped fiber laser. By completely characterizing the intensity and phase of the laser output pulses, the intracavity fields in the nonlinear amplifying loop mirror of the laser cavity are determined by numerical propagation using the nonlinear Schrödinger equation. Excellent switching of 95% can be achieved as a result of uniform phase characteristics developed by pulses propagating in the nonlinear amplifying loop mirror.

Complete characterization of ultrashort pulse sources at 1550 nm

“…In Section II, we report the characterization of three different sources of picosecond pulses around 1550 nm: a figure-of-eight erbiumdoped fiber laser [11], a single-mode gain-switched InGaAsP semiconductor laser [12], and a dual-mode gain-switched InGaAsP semiconductor laser [13]. We also describe experiments studying pulse compression in dispersion-compensating fiber.…”