Tunable multiwavelength erbium-doped fiber laser with a polarization-maintaining photonic crystal fiber Sagnac loop filter

Abstract

Abstract:We propose and demonstrate a tunable multiwavelength erbium-doped fiber laser based on a polarizationmaintaining photonic crystal fiber (PM-PCF) Sagnac loop filter. Stable, room-temperature operation is obtained by employing a nonlinear optical loop mirror. At a central wavelength of 1563.000 nm, we generate 60 wavelengths within 3-dB bandwidth. The measured power fluctuation for each lasing wavelength is less than 0.2 dB in half an hour. Furthermore, by adjusting the polarization controllers in the Sagnac filter, wavelength locations of the laser lines with a fixed channel spacing of ∼ 0.078 nm can be continuously shifted.Intensity, 2 dB/div 1562.6

Tunable and stable single-longitudinal-mode dualwavelength erbium fiber laser with 1.3 nm mode spacing output

“…Mode-spacing and wavelength tuning laser using bismuth-oxide fiber or photonics crystal fiber with nonlinear effect have been studied and reported [15][16][17][18], however, by comparing with our proposed scheme, we only need commercially available and standard components to achieve the two-mode lasing and has costeffective.…”

High power and compact switchable bismuth based multiwavelength fiber laser

“…The chosen wavelength for this measurement is 1556.21 nm, corresponding to λ 6 . The peak power only varies very slightly over the 25 minute time period with a fluctuation of less than 2%, which shows high stability as in other similar SWFL systems [1,12]. Furthermore, the high SMSR of 40 dB results in these fluctuations being undetectable in real applications.…”

Tunable Dual-Wavelength Laser Scheme by Optical-Injection Fabry-Perot Laser Diode

“…Mode-spacing and wavelength tuning laser using bismuth-oxide fiber or photonics crystal fiber with nonlinear effect have been studied and reported (Liu et al, 2008;Al-Mansoori et al, 2008). Comparing with our proposed dual-wavelength laser schemes as following (Yeh et al, 2008;Yeh et al, 2009), we only need commercially available and standard components to achieve the two-mode lasing and also has a benefit of cost-effective.…”