Multi-wavelength Brillouin fiber laser generation using dual-pass approach

Abstract

A simple and compact multi wavelength tunable Brillouin fiber laser (BFL) in conjunction with dual pass approach is proposed and experimentally compared with the output of a conventional single ring cavity architecture. This BFL source is demonstrated using 10 km long non zero dispersion shifted fiber (NZ DSF) as a Brillouin gain medium. By single ring cavity configuration, odd order Brillouin Stokes lines appear in the backward direction with the line spacing 0.16 nm (~20 GHz) between each two consecutive waves. However, this single ring cavity in conjunction with dual pass configuration is able to generate Bril louin Stokes lines with 0.08 nm spacing by providing bi directional oscillations of Brillouin waves in both for ward and backward directions. With a Brillouin pump power of 15.3 dBm, approximately up to 17 Brillouin Stokes lines are generated which is tunable over 40 nm tuning range.

Characteristics of multiwavelength L-band Brillouin–Raman fiber laser under forward and backward pumped environment

“…The generation of multiwavelength fiber lasers with constant channel spacing has been proposed in many works during the past two decades, due to their potential applications as attractive optical sources for wavelength division multiplexing communication systems [1,2], optical sensor systems [3][4][5][6], fiber laser gyroscopes [7,8], optical frequency metrology [9], and in switchable high-frequency microwave generation [10].…”

Double spacing multi-wavelength L-band Brillouin erbium fiber laser with Raman pump

“…Multi-wavelength fiber lasers (MWFLs) with constant wavelength spacing have attracted much interest recently, owing to their applications in optical fiber sensing, spectroscopy, microwave signal processing and dense wavelength division multiplexing (DWDM) systems [1][2][3][4]. They have been developed using various technologies such as semiconductor optical amplifiers, erbium-doped fiber amplifiers and Raman amplifiers [5][6][7].…”

Double Brillouin frequency spaced multiwavelength Brillouin-erbium fiber laser with 50 nm tuning range

“…Multiwavelength Brillouin erbium doped fiber lasers (MWBEFLs) combine the narrow amplification of stimulated Brillouin scattering (SBS) with the high gain from the erbium doped fibers amplifier (EDFA) to generate multiple peaks with equal wavelength spacing within broad band at room temperature, which find potentially application in dense wave length division multiplexing (DWDM) systems, opti cal fiber sensors, optical test and measurement and microwave photonics [1][2][3][4][5]. However, the narrow wavelength spacing (~10 GHz) increases the difficulty of channel demultiplexing and the wavelength tun ability influenced by the existence of self lasing cavity modes limits the practical applications.…”