Dynamics of widely tunable single-frequency semiconductor fiber ring laser

Chen, H.

doi:10.1016/j.physleta.2003.11.038

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…In the ring cavity, the beam can propagate with unidirectional oscillation owing to the usage of the isolator and circulator, which is beneficial to better obtain a single-frequency laser [6]. Typically, filters are employed in the ring cavity to obtain stable SLM outputs, such as micro-ring resonator filters [7,8], nonlinear semiconductor optical amplifiers [9][10][11], and sub-ring resonators [12].…”

Section: Introductionmentioning

confidence: 99%

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Li,

Yang,

Sui

et al. 2023

Laser Phys. Lett.

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In this paper, we proposed a narrow linewidth single-longitudinal-mode (SLM) fiber laser, which was realized by employing a triple-cascaded unpumped erbium doped fiber (EDF) Sagnac loops structure with Rayleigh backscattering (RBS) feedback. Narrow linewidth SLM laser output can be achieved by using the unpumped EDF loops. However, it is generally difficult to achieve laser emission with a linewidth below 1 kHz and a power of tens of milliwatts. In this paper, we propose a fiber laser with multiple unpumped Er-doped fiber loops and self-injection feedback. The cascade of multi-unpumped Er-doped fiber rings is employed to reduce the linewidth of the laser, while the self-injection feedback based on RBS is used to improve the stability of the laser and further compress the laser linewidth. By only utilizing three unpumped Er-doped fiber rings cascaded, we obtain an output beam with a linewidth of 723.05 Hz and laser power of 21.52 mW with 0.30 dB fluctuation during a period time of 30 min at the pump power of 170.6 mW. After introducing the feedback mechanism based on RBS into the fiber laser, an output laser with a linewidth of 530.11 Hz and a laser power of 8.57 mW with 0.23 dB fluctuation in 30 min can be obtained at the pump power of 268.68 mW. Compared with the fiber laser with one unpumped Er-doped fiber ring, the linewidth is reduced more than two times.

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Section: Introductionmentioning

confidence: 99%

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Li,

Yang,

Sui

et al. 2023

Laser Phys. Lett.

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“…The single frequency operation was realized using a composite cavity, to make the cavity to have a much greater free spectral range. In [24], a single-frequency fiber ring laser was proposed with the single-frequency operation realized based on the high pass filtering effect of the SOA. Since no analysis on the high pass filtering on the mode selection was provided, it is not clear if such effect exists in all SOAs or only in the SOA used for the experiment reported in [24].…”

Section: Introductionmentioning

confidence: 99%

“…In [24], a single-frequency fiber ring laser was proposed with the single-frequency operation realized based on the high pass filtering effect of the SOA. Since no analysis on the high pass filtering on the mode selection was provided, it is not clear if such effect exists in all SOAs or only in the SOA used for the experiment reported in [24]. Recently, Turitsyn et al reported a new nonlinear self-action effect, self-parametric amplification (SPA), which manifests itself optical spectrum narrowing in a normal dispersion fiber [25].…”

Section: Introductionmentioning

confidence: 99%

Tunable single-frequency fiber laser based on the spectral narrowing effect in a nonlinear semiconductor optical amplifier

et al. 2016

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A wavelength-tunable single-frequency fiber laser based on the spectral narrowing effect in a nonlinear semiconductor optical amplifier (NL-SOA) is proposed and experimentally demonstrated. The single-frequency operation is achieved based on the spectral narrowing effect resulted from the inverse four-wave mixing in a NL-SOA. By incorporating the NL-SOA in the fiber laser cavity, single-frequency lasing is achieved. The lasing frequency can be tuned by tuning the center wavelength of a tunable filter (TF) incorporated in the laser cavity. The proposed wavelength-tunable single-frequency fiber laser is experimentally evaluated. Stable single-frequency oscillation with a side-mode suppression ratio (SMSR) as high as 55 dB and a spectral linewidth of less than 10.1 kHz over a wavelength tuning range of as wide as 48 nm is demonstrated.

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“…As an example, one can use a fiber ring laser with an erbium-doped fiber (EDF) as the gain medium 6 and an optical tunable filter (OTF) for wavelength selections. [7][8][9] Erbium-doped fiber lasers (EDFLs), which generate several wavelengths, have attracted great attention in WDM communications. 10,11 The deployment cost for the proposed WDM system testing scheme is potentially low due to the fact that the tunable erbium-doped fiber ring laser (T-EDFL) sources located at the central office (CO) can be shared by several WDM networks.…”

Section: Introductionmentioning

confidence: 99%

Tunable C- and L-band erbium-doped fiber ring lasers for performance testing of a wavelength-division multiplexing access network with injection-locked Fabry-Pérot laser diodes

Lin

2010

Opt. Eng

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A widely wavelength-tunable erbium-doped-fiber laser (T-EDFL) located at a central office is proposed for the bidirectional highspeed performance testing of wavelength-division-multiplexing access networks in which injection-locked Fabry-Pérot laser diodes located at optical network units are used for upstream transmissions. The T-EDFL not only generates laser light for downstream transmission testing, but also serves as the injection source for upstream transmission testing. It has a wide tunable range of 64 nm (1540 to 1604 nm), a high output power of 2.2 dBm, and a good signal-to-noise ratio above 46 dB. For 10-Gb/s downstream and 1.25-Gb/s upstream transmissions over a 10-km single-mode fiber (SMF), power penalties at a bit error rate of 10 − 9 are less than 0.94 dB and 0.76 dB (1.26 dB and 1.68 dB) for downstream and upstream transmissions at C-band (at L-band) wavelengths, respectively. In the transmissions over a 25-km SMF, the penalties are 2.24 dB and 2.36 dB (3.66 dB and 4.18 dB) at C-band (at L-band) for downstream and upstream transmissions, respectively. C 2010 Society of Photo-Optical Instrumentation Engineers.

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Dynamics of widely tunable single-frequency semiconductor fiber ring laser

Cited by 11 publications

References 6 publications

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Tunable single-frequency fiber laser based on the spectral narrowing effect in a nonlinear semiconductor optical amplifier

Tunable C- and L-band erbium-doped fiber ring lasers for performance testing of a wavelength-division multiplexing access network with injection-locked Fabry-Pérot laser diodes

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