Multiwavelength fiber laser based on a photonic crystal fiber loop mirror with cooperative Rayleigh scattering

Abstract

In this work, a multiwavelength fiber Raman laser based on a highly birefringent photonic crystal fiber loop mirror is presented. A laser resonator is formed when the Raman amplification with cooperative Rayleigh scattering in a dispersion-compensating fiber is used as a distributed mirror and combined with a photonic crystal fiber loop mirror filtering structure. Stable multiwavelength lasing at room temperature is achieved due to the low temperature sensitivity of the highly birefringent photonic crystal fiber.

Multi-Wavelength Fiber Lasers

“…An interesting approach in order to diminish these losses is using this Rayleigh associated noise as an active part of the laser. It can be used as a distributed random mirror transforming what were losses in gain in the output signal [112], [113]. Lasers taking advantage of cooperative Rayleigh scattering as a self-feedback mechanism of Brillouin-Rayleigh scattering have been reported [114]- [116].…”

Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation

“…So, CW generation of five lines has been obtained in the cavity formed by RS mirror and five FBGs separated by 5-10nm 16 . Stable operation with ~1nm separation between the lines appears possible in schemes involving a photonic crystal fiber loop mirror 17 or two different-wavelength FBGs placed at opposite ends of a 200-km long fiber 18 .…”

Random distributed feedback Raman fiber laser with polarized pumping

“…Various aspects of RFL have been studied in recent years. RFL has demonstrated to be tunable [14], multi-wavelength [15][16][17][18], narrow bandwidth [19], cascaded operation to generate high order Stokes wave [20][21][22][23] and high output power [24,25].. However, up till now, there are still a lot of open questions regarding the physics of random lasing in fibers.…”