Tunable and stable multi-wavelength erbium-doped fiber laser based on a double Sagnac comb filter with polarization-maintaining fibers

He, Wei; Cheng, Shangguan; Zhu, Lianqing; Dong, Mingli; Luo, Fengguang

doi:10.1016/j.ijleo.2017.03.007

Cited by 34 publications

(8 citation statements)

References 15 publications

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“…Multi-wavelength fiber lasers have been studied for their application in many important fields, such as dense wavelength division multiplexing optical communication systems, optical fiber sensor systems, etc For obtaining multi-wavelength output, different schemes have been proposed, such as Fabry-Perot and Mach-Zehnder interferometers [1], or a double Sagnac comb filter with polarization-maintaining (PM) fibers [2], or a PM fibre Bragg grating and Mach-Zehnder interferometer with optical fiber delay line [3], or a spectrum reshaped by Rayleigh scattering [4], or a coupled microfiber Mach-Zehnder interferometer [5], or the combined effects of four-wave mixing and self-seeding stimulated Brillouin scattering [6], or a four-mode fiber [7], or a gain flattening multilayer few-mode fiber Bragg grating filter [8].…”

Section: Introductionmentioning

confidence: 99%

Quintuple-wavelength EDF laser based on multimode fibers with different core diameters

et al. 2020

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A switchable quintuple-wavelength erbium-doped fiber laser using the linear-cavity configuration is proposed and demonstrated experimentally at room temperature. It is composed of two Sagnac loops that act as the cavity mirrors in the resonant cavity and contain two kinds of multimode fibers with different core diameters (50 and 62.5 µm). The two loops become two comb filters to jointly excite the multi-wavelength output. By using the effects of multimode interference and polarization hole-burning, and after adjusting a polarization controller, the laser can switch flexibly to output nine different kinds of modes from single-wavelength to quintuple-wavelength. All lasing lines with a narrow linewidth of less than 0.25 nm have an optical signal-to-noise ratio of more than 14 dB. The laser has good power uniformity shows good stability with respect to the wavelength and peak power.

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Section: Introductionmentioning

confidence: 99%

Quintuple-wavelength EDF laser based on multimode fibers with different core diameters

et al. 2020

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“…Previously, tunable laser operation can be achieved by mode-selection using thin film filter, acousto-optic tunable filter in laser resonators [4], [5]. However, as to increase the compactness and reduce intracavity loss, fiber filters are used, such as fiber Bragg gratings (FBGs) [6], [7], high birefringence (HiBi) Sagnac interferometers [8], [9] and Mach-Zehnder interferometers (MZIs) [10], [11]. Wavelength tuning ability of the FBG is determined by its strain characteristics.…”

Section: Introductionmentioning

confidence: 99%

Optical Property of Polarization-Maintaining Fiber Taper for Tunable Multi-Wavelength Fiber Laser Generation

et al. 2020

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We investigate optical property of polarization-maintaining fiber taper (PMFT) for tunable multi-wavelength laser generation in a fiber ring cavity. A panda-type polarization fiber is fused and tapered into a fiber taper with a diameter of about 2.5 μm. Optical and thermal properties of the PMFT are investigated theoretically and experimentally. As combined with a polarization dependent isolator, tunable multi-wavelength fiber laser operation is achieved by controlling of polarization-dependent loss in the fiber ring cavity. The laser wavelength number can be switched from 1 to 4. The 3 dB bandwidths of laser spectra are less than 0.05 nm for all wavelength numbers, with a maximum OSNR of about 54 dB. For single-wavelength laser operation near 1561.66 nm, the measured wavelength and power fluctuations are < 0.02 nm and 0.4 dB, respectively.

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“…For example, in generating multi-wavelength outputs by stimulated Brillouin scattering [11], four-wave mixing (FWM) [12], stimulated Brillouin-Raman scattering [13] and through the exploitation of nonlinear polarization rotation [14]. To preserve the stability of the lasing output, many passive optical components, named wavelength selective filters, have been introduced into the laser cavity to overcome the unstable mode competition produced by the homogeneous broadening of the erbium-doped fiber spectrum, such as nonlinear optical loop mirrors (NOLMs) [15], tunable interference filters [16], fiber Bragg grating [17], Sagnac interferometers [18], Mach-Zehnder interferometers (MZIs) [19].…”

Section: Introductionmentioning

confidence: 99%

Experimental research on an L-band multi-wavelength erbium-doped fiber laser based on a cascaded Sagnac loop and M–Z filters

Fan

Zhou

et al. 2019

Laser Phys.

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In this paper, we proposed and experimentally demonstrated an L-band multi-wavelength erbium-doped fiber (EDF) laser with a cascaded Sagnac loop, M-Z interferometer filters and a non-linear optical loop mirror (NOLM). The NOLM acted as the intensity-dependent transmissivity; it can effectively alleviate the mode competition and beating caused by homogeneous broadening. The transfer characteristic of the Sagnac loop was investigated firstly and got the optimized parameters. Then the laser output spectrum with different kinds of filters in the cavity was experimentally tested when the pump power was fixed at 450 mW. The experimental results showed that the EDF laser with the cascaded filters in the cavity had a better performance, such as a better flat lasing bandwidth within 3 dB, higher side-modesuppression ratio and more comb lines generated. The peak power fluctuation was less than 0.35 dB within a 30 min monitor time.

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Tunable and stable multi-wavelength erbium-doped fiber laser based on a double Sagnac comb filter with polarization-maintaining fibers

Cited by 34 publications

References 15 publications

Quintuple-wavelength EDF laser based on multimode fibers with different core diameters

Quintuple-wavelength EDF laser based on multimode fibers with different core diameters

Optical Property of Polarization-Maintaining Fiber Taper for Tunable Multi-Wavelength Fiber Laser Generation

Experimental research on an L-band multi-wavelength erbium-doped fiber laser based on a cascaded Sagnac loop and M–Z filters

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