Multiwavelength erbium-doped fiber laser based on nonlinear polarization rotation assisted by four-wave-mixing

Multi-Wavelength Fiber Lasers

“…Liu et al [52] experimentally demonstrated a simple-structure but efficient multiwavelength EDFL based on dual effects of nonlinear polarization rotation (NPR) and four-wavemixing (FWM). With this structure, a maximum of 38-lines output in C-band and 28-wavelength flattened output within 3 dB bandwidth in L-band, both with the same spacing of about 0.4 nm, was obtained.…”

“…Because of potential applications of multiwavelength fiber lasers, such as the fields of optical communication, optical fiber sensing, optical component testing and microwave photonics among other, erbium-doped fiber lasers emitting in multiple wavelengths simultaneously have attacked much interest recently [79], [80]. The multiwavelength fiber lasers used have various advantages such as the wavelength multiplexing operation, simple and compact structure, low cost, and small insertion loss, etc.…”

Polarization controlled tunable multiwavelength SOA-fiber laser based on few-mode polarization maintaining fiber loop mirror

“…Therefore, the spectral response of the proposed FM-PMF loop mirror is unrelated to polarization state of the input signal. Differently, the spectral response of the Lyot filter composed of the PMF [16,17] is polarization-dependent. By contrast, use of the FM-PMF loop mirror as an optical filter in the laser cavity contributes to improvement of its output stability on account that the transmission loss of the Lyot filter is subject to the polarization state of the signal travelling in the cavity.…”

Arbitrarily switchable multi-wavelength Yb-doped fiber lasers with phase-shifted long-period fiber grating

“…To overcome this drawback, various methods have been proposed and successfully demonstrated, such as, nitrogen cooling technique [9], polarization hole burning (PHB) effect [10], nonlinear polariza tion rotation (NPR) technique [8], nonlinear optical loop mirror (NOLM) [4], saturable absorber [11], and four wave mixing [12], etc.…”