Optical Generation of Tunable Microwave Signal Using Cascaded Brillouin Fiber Lasers

Liu, Jinmei; Zhan, Li; Xiao, Pingping; Shen, Qishun; Wang, Gaomeng; Wu, Zhijing; Liu, Xuesong; Zhang, Liang

doi:10.1109/lpt.2011.2171932

Cited by 14 publications

(12 citation statements)

References 14 publications

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“…S TIMULATED Brillouin scattering (SBS) with narrow band and low noise has broad applications in frequency shifter [1], microwave frequency generation [2], [3], narrow bandwidth low-noise amplification [4], [5] and fiber laser [6]- [12]. Meanwhile, extra attention has been attracted to single longitudinal mode Brillouin fiber laser (BFL) with high quality, low loss and cost.…”

Section: Introductionmentioning

confidence: 99%

“…The investigation is mainly concentrated on the following aspects. On the one hand, in order to separate the pump and Brillouin laser and reduce the threshold power, single ring cavity with one 2 × 2 coupler [7]- [9], an circulator [2], [11], [12] or an unbalanced MachZehnder interferometer (UMZI) [9] is configured. Circulator based single ring cavity has the advantage that the Brillouin pump frequency does not need to match the cavity mode.…”

Section: Introductionmentioning

confidence: 99%

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Single Longitudinal Mode Brillouin Fiber Laser With Cascaded Ring Fabry–Pérot Resonator

Liu

Wang

et al. 2014

IEEE Photon. Technol. Lett.

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A novel single longitudinal mode (SLM) Brillouin fiber laser (BFL) with cascaded ring (CR) Fabry-Pérot resonator is proposed and demonstrated. By optimizing the CR length of the single mode fiber cavity at 100 m (or 50 m) and 10 m, stable SLM operation is obtained. Therefore, the threshold power is lower and linewidth is narrower than that of previously reported BFL with 10 m (or 20 m) single cavity. Additionally, there is no additional attenuation except intrinsic loss of optical devices. The measured linewidth with 60 dB (or 45 dB) improved value of side mode suppression ratio is 0.41 kHz (or 3.23 kHz), which is three (or two) orders of magnitude than that of the pump. Using a stabilizing feedback loop based on autotracking technique with polarization maintaining fiber-based optical delay line, the SLM BFL exhibits good performance with 6% power fluctuation in 1 h. Index Terms-Cascaded ring Fabry-Pérot resonator, Brillouin fiber laser (BFL), single longitudinal mode (SLM), narrow linewidth.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single Longitudinal Mode Brillouin Fiber Laser With Cascaded Ring Fabry–Pérot Resonator

Liu

Wang

et al. 2014

IEEE Photon. Technol. Lett.

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“…Certainly, the laser would have lower threshold and more stable output if using polarization-maintaining fibers [13]. Such lasers can be found many applications, but also can provides a technological platform for superluminal propagation [18] or microwave generation [19].…”

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confidence: 99%

Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser

et al. 2012

Self Cite

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A watt-level ultrahigh optical signal-to-noise ratio (OSNR) single-longitudinal-mode (SLM) tunable Brillouin fiber laser (BFL) has been demonstrated. By optimizing the length of the single mode fiber (SMF) cavity at 11m and its output ratio at sixty percent, 1.04 W output power, as well as stable SLM operation is obtained at 2.24 W pump power. The single pass cavity BFL has the advantage that Brillouin pump frequency doesn't need to match the cavity mode, thus the stability is greatly improved. As only SMF is used in the cavity, the operate wavelength can be tunable without the restriction from self lasing cavity mode. Furthermore, it proves that core-pumped single frequency fiber laser is able to generate watt-level power. The laser has excellent performance in terms of noise, linewidth, and stability. © 2012 Optical Society of America OCIS code: 060.3510, 140.3510, 190.2640. High power single-longitudinal-mode (SLM) fiber lasers with high optical signal-to-noise ratio (OSNR) have enormous applications such as remote sensing, ladar, coherent detection, and nonlinear optics. Recently, the output power of fiber lasers grew quickly, but SLM fiber lasers did not [1]. SLM fiber lasers can be boosted to watt-level [2,3], but it is still a challenge to preserve high OSNR. Besides, the output power of SLM fiber laser is also limited by the backward stimulated Brillouin scattering (SBS) [3,4]. Owing to narrow band gain of SBS, Brillouin fiber lasers (BFLs) with ~10m cavity can operate at SLM status. Though the threshold of BFLs [5] can be reduced to submilliwatt level, but the pump frequency has to match the cavity mode. This causes a big trouble for practical operation owing to the inevitable fluctuation of pump frequency. Moreover, it is difficult to output large power as the cavity is critically coupled [5]. Hybrid BFLs including active media don't need the critically coupled resonator [6], and they are able to achieve large power. A 1 W SLM Brillouin/ytterbium fiber laser with 60 dB OSNR has been demonstrated [7]. However, for a hybrid BFL, the wavelength tunability is limited at the self-lasing range [8]. Besides, it inevitably introduces amplified spontaneous emission (ASE) noise from active fibers. Different than hybrid BFLs, the BFLs without active fibers have wider tunable range, higher OSNR, and narrower linewidth. A SLM BFL with 12 m length cavity has been reported and shown stable output power [9]. In this letter, only SMF is used in the single pass cavity. By exploiting the high efficiency of SBS in fibers and the large output ratio of the lasing cavity, we demonstrate a wattlevel SLM tunable BFL with 75dB OSNR.Figure1 shows the configuration of the BFL, which consists of a tunable laser source (TLS) with 100 kHz linewidth, an erbium-doped fiber amplifier (EDFA), a polarization controller (PC), an optical circulator (OC) with 20% power loss, a 60/40 coupler with 5% loss. The cavity length is 11 m, corresponding to 18 MHz free spectral range. The laser from TLS is amplified by the EDFA as the input Brill...

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“…Thus, the FSR of R1 and R2 are 2 and 20 MHz, respectively. According to (1), effective FSR is 20 MHz. When effective FSR exceeds the Brillouin gain bandwidth (20 MHz) and gain is great than loss, the laser m L1 ¼ m P À m B under gain bandwidth oscillates only at a frequency.…”

Section: Fabrication and Principlementioning

confidence: 99%

“…Multiwavelength fiber lasers are of great interest for many applications, such as optical sensing, dense wavelength division multiplexing (DWDM) systems and microwave frequency generation [1]. The requirements for multiwavelength sources include a large number of channels over broad bandwidth, rigid and stable wavelength spacing, narrow linewidth and small power fluctuation.…”

Section: Introductionmentioning

confidence: 99%

Stable multiwavelength single longitudinal mode dual ring Brillouin fiber laser

Liu

Wang

et al. 2015

Opt Rev

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A novel stable multiwavelength single longitudinal mode (SLM) dual ring Brillouin fiber laser is proposed and demonstrated. Dual ring configuration with 100 and 10 m length of single mode fiber guarantees each Stokes and anti-Stokes waves in SLM status. Linewidth of the first Stokes wave is below 4 kHz with 60 dB sidemode suppression value. 7 stable SLM lasing wavelengths including the pump with a 5 dB bandwidth of 0.5, 0.084 nm wavelength spacing and 15 dB average optical signal-tonoise ratio are generated through the cascaded SBS and degenerate FWM process. The laser can freely be tuned 30 nm range from 1535 to 1565 nm. The power fluctuation of the first Stokes wave is about 8 % measured by Data Acquisition System in 1 h.

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Optical Generation of Tunable Microwave Signal Using Cascaded Brillouin Fiber Lasers

Cited by 14 publications

References 14 publications

Single Longitudinal Mode Brillouin Fiber Laser With Cascaded Ring Fabry–Pérot Resonator

Single Longitudinal Mode Brillouin Fiber Laser With Cascaded Ring Fabry–Pérot Resonator

Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser

Stable multiwavelength single longitudinal mode dual ring Brillouin fiber laser

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