A 100 mW-level single-mode switchable dual-wavelength erbium-doped fiber laser

Abstract

A switchable dual-wavelength CW erbium-doped fiber laser with two cascaded fiber Bragg gratings has been proposed and demonstrated experimentally at room temperature. The laser uses a linear resonant cavity configuration incorporating a Sagnac loop with a polarization controller (PC) and can switch flexibly to output a single wavelength or dual wavelengths based on the polarization hole burning (PHB) effect. The slope efficiency and maximum output power can reach 23% and 96 mW, respectively. The two lasing peaks of the laser, with a narrow linewidth output and an optical signal-to-noise ratio of more than 50 dB, are located in the C and L bands of the optical communication window, respectively. The laser shows good stability with respect to the wavelength and output power.

Observation and comparison of multiwavelength generation erbium doped fibre ring laser utilising photonic crystal fibre with zero dispersion at 1040 nm and 1550 nm

“…The length of this PCF is considered short compared to other experimental setup [6]. These single mode nonlinear PCF has the characteristics of 11 W/km nonlinear coefficient whereas in other work, it applies more than 30 W/km nonlinear coefficient [2], attenuation of less than 3 dB/ km and mode field of diameter is less than 4.0 µm.…”

“…Generation of multi wavelength can be obtained from various method, some applies photonic crystal fibre (PCF) with combination of fibre Bragg gratings (FBGs) in an oscillation [1,2] and some through linear cavity set up [3]. These techniques utilised non linear effect in generation of four wave mixing process.…”

Tunable and Switchable Erbium-Doped Fiber Laser Using a Multimode-Fiber Based Filter

“…Due to the nature of the homogeneous broadening effect of the erbium doped fiber, it is challenging to achieve a stable multi-wavelength operation. Multiwavelength EDFLs have been demonstrated by using different schemes, for example, cascaded fiber Bragg gratings (FBGs) [1], four-wave-mixing of dispersion shifted fiber [2], nonlinear polarization rotation [3], and various fiber-optic interferometers (FOIs) [4][5][6][7][8][9][10][11][12][13][14][15][16]. Among them, much of the research attention has been recently paid to employ FOIs to generate multiwavelengths.…”

Stable and switchable single-longitudinal-mode dual-wavelength erbium-doped fiber laser based on a fiber ring filter

“…In 2013, a single-mode switchable dual-wavelength EDFL with two cascaded FBGs was realized by Jianqun Cheng; in that EDFL design, the maximum peak power variations of the two lasers were 2.3 dB and 2 dB, respectively, when the EDFL was operated in the single-wavelength mode; when the EDFL was operated in the dual-wavelength lasing mode, peak power shifts of 1.4 dB and 0.7 dB were realized [7]. In 2013, a dual-wavelength ring EDFL with a photonic-crystal fiber and a tunable band-pass filter was demonstrated by H. Ahmad; for that EDFL, the wavelength fluctuations for both wavelengths were less than 10 pm [8].…”