Tunable multi-wavelength SOA based linear cavity fiber laser source for optical communications applications

Abstract

We propose and demonstrate a simple compact, inexpensive, SOA-based, multi-wavelength tunable (C-to Lband) fiber laser. A C-band design SOA is used, yet multiwavelength operation either at the C or L-band region is accomplished by exploiting the gain compression phenomena of the SOA. We demonstrate that the wavelength tunability can be achieved either by inserting a variable attenuator inside the cavity of the laser or by changing the reflectivity of the mirrors. We exploit two different kinds of loop mirrors, a Sagnac and a Lyot-Sagnac loop mirror, which perform multiple functions. Stable multi-wavelength operation is achieved at room temperature without temperature compensation techniques, with measured power and the wavelength stability within < ±0.5 dB and ±0.1 nm, respectively.

High-power self-similar amplification seeded by a 1 GHz harmonically mode-locked Yb-fiber laser

“…igh-power ultrafast-pulse lasers operating at a repetition rate of multigigahertz find applications in various fields such as precision material processing, 1) high-speed optical communication, 2) astronomical calibration, 3) and bio-imaging. 4) Particularly, an Yb-fiber-based pulse laser has drawn much attention because of its high repetition rate, high optical-to-optical efficiency, good beam quality, and excellent power-scaling capability.…”