L-Band Wavelength-Selectable Erbium Laser with Stable Single-Frequency Oscillation

Hsieh, Shang-En; Hsu, Ching-Hsuan; Yeh, Chien‐Hung; Jiang, Syu-Yang; Lai, Yu-Ting; Chow, Chi‐Wai; Liaw, Shien‐Kuei

doi:10.3390/electronics11192996

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Hence, the presented EDF ring laser also displays the better output stability. Moreover, compared with the previous compound-ring based EDF laser [16], this proposed simple EDF laser scheme also includes the hybrid MZI, triple-ring and EDF-SA induced mode-filter effect for suppressing MLM oscillation.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…Commonly, the most of EDF lasers operated in the C-band scope from 1528 to 1562 nm. Due to the rapid rise of the current cloud network, AI application, big data, internet of things (IOT) and broadband optical access link, the achievable wavelength-swept range of EDF lasers also need to extend from S-(1480 to 1520 nm) to L-band (1565 to 1620 nm) [16,17]. Actually, using the MZI based comb filter inside fiber ring cavity also can achieve the multi-wavelength output in EDF laser scheme [18].…”

Section: Introductionmentioning

confidence: 99%

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Stable wavelength-swept single-frequency erbium fiber laser in L-band tuning bandwidth

Lai

Chen

et al. 2023

Phys. Scr.

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In the study, we demonstrate an erbium-doped fiber (EDF) laser system by integrating the Mach-Zehnder interferometer (MZI) and triple-fiber-ring structures to generate the single-longitudinal-mode (SLM) output in L-band bandwidth. Here, a sub-ring with a 5.5 m unpumped EDF based saturable absorber (SA) is also applied to induce the narrowband auto-tracking filter behavior. Based on the proposed fiber cavity induced mode-filter effect, the EDF laser can achieve the stable, narrow and wavelength-tunable output characteristics over an effective tuning range of 1568.0 to 1613.0 nm. Furthermore, the output stability, optical signal to noise ratio (OSNR), output power and laser linewidth of the laser are also performed and discussed.

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Section: Experiments and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stable wavelength-swept single-frequency erbium fiber laser in L-band tuning bandwidth

Lai

Chen

et al. 2023

Phys. Scr.

Self Cite

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“…Consequently, by directly using conventional optical filters as wavelength selection elements for laser oscillators, it is challenging to achieve single-mode outputs. To overcome this challenge, common techniques for single-mode selection in fiber ring lasers include compound rings with Vernier effects [1][2][3][4][5], saturable absorbers [6][7][8][9], cascaded microfiber knots [10], whispering gallery mode resonator [11], phase-shifted fiber Bragg gratings [12], and dynamic gratings [13,14] to establish narrow linewidth filters. However, these methods often require complex cavity structures and fine parameter tuning.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Fiber Ring Laser Based on Polarization Space Parity-Time Symmetry Breaking

Zhang,

Wu,

Tong

et al. 2024

Photonics

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This work proposes and experimentally demonstrates a high-performance polarization space parity-time (PT) symmetric fiber ring laser to achieve a low-noise, narrow-linewidth, and highly stable single-longitudinal-mode output. The gain/loss and coupling coefficients are regulated by adjusting a polarization controller (PC) and the pumping current of an erbium-doped fiber amplifier (EDFA) within the ring cavity. The results show that the single longitudinal mode oscillation of the laser can be implemented by PT symmetry breaking. The frequency noise spectral density and the linewidth characteristics of the laser are evaluated by the short-delay self-heterodyne method. The results reveal that excellent low-frequency noise (181 Hz2/Hz at a 10 kHz offset frequency) and narrow fundamental linewidth (68 Hz) can be achieved. Additionally, the laser exhibits outstanding stability with only 0.64 pm wavelength drift over 30 min. By tuning an optical tunable filter (OTF), the wavelength tunable range of the laser can cover the entire C-band. Furthermore, the impacts of different fiber length on the frequency noise spectral density and the filter bandwidth on stability are analyzed, offering guidance for component selection in such laser systems.

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Tunable and stable single-frequency fiber laser by applying Rayleigh feedback light and saturable absorber filter

Hsu

Lai

Chen

et al. 2023

Optical Fiber Technology

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L-Band Wavelength-Selectable Erbium Laser with Stable Single-Frequency Oscillation

Cited by 8 publications

References 23 publications

Stable wavelength-swept single-frequency erbium fiber laser in L-band tuning bandwidth

Stable wavelength-swept single-frequency erbium fiber laser in L-band tuning bandwidth

High-Performance Fiber Ring Laser Based on Polarization Space Parity-Time Symmetry Breaking

Tunable and stable single-frequency fiber laser by applying Rayleigh feedback light and saturable absorber filter

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