Tunable Multiwavelength Ytterbium-Doped Fiber Laser Based on Nonlinear Polarization Rotation

Zhang, Zuxing; Zhang, Liang; Xu, Zihui

doi:10.1142/s0218863512500415

Cited by 11 publications

(4 citation statements)

References 11 publications

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“…The design consists of a unidirectional amplifying of light propagation [24,25]. By adjusting the PC in the loop for certain angles between the polarization states of the two counter propagating lights in the cavity, the two counter propagation lights travel along different axes of the PMF and accumulate phase difference [9,25].…”

Section: Methodsmentioning

confidence: 99%

“…Multiwavelength fiber lasers are well known for their use in applications in telecommunications, for example optical fiber sensors, which are applicable to long-haul sensing systems, dense wavelength division multiplexing (DWDM) and also optical spectroscopy [2][3][4][5]. They can also act as selectable wavelength laser sources in microwave photonics systems applications [6][7][8] and instrument testing [4,9]. Erbium-doped fiber amplifier (EDFA) is a typical gain media, which has been used to generate multiwavelength fiber lasers in the C-band region due to erbium ion characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Large dynamic range operation of ultra-higher number MWFLs affected by MZI-SI

et al. 2016

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This report presents a large dynamic operation of wavelength numbers of laser lines that have been periodically filtered using an MZI-SI filter effect. A 70 nm span range for a wider periodic comb filter with 0.60 nm wavelength spacing was achieved through an advanced triple-loop ring-cavity fiber laser with a combination of MZI-SI. Almost all of the best 95 numbers of wavelengths are flattened at 6 dB of peak power fluctuation in a 52 nm range. By adjusting the rotation angles of a polarization controller (PC), the ultra-wide range multiwavelength spectrum has been shifted by 36 nm in a range from 1522.8-1558.6 nm.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large dynamic range operation of ultra-higher number MWFLs affected by MZI-SI

et al. 2016

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“…Investment in multiwavelength Q‐switched ytterbium‐doped fiber lasers (YDFL) has drawn much interest in recent years owing to their numerous applications in sensing, communication, spectroscopy, and laser therapy . The remarkable progress in fiber lasers, especially in 1 μm region, has led to a technological shift from solid‐state lasers such as Nd‐YAG to Yb‐doped fiber (YDF) laser .…”

Section: Introductionmentioning

confidence: 99%

Triple‐wavelength Q‐switched ytterbium‐doped fiber laser based on tungsten oxide as saturable absorber

Salman

Al‐Janabi

2020

Micro & Optical Tech Letters

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In this article, a multiwavelength Q-switched ytterbiumdoped fiber laser using tungsten oxide nanoparticles (WO 3 NPs) as a saturable absorber (SA) is reported for the first time. The SA was prepared by depositing micron-sized layers of WO 3 NPs suspension onto the surface of the fiber tip via direct deposition process. After embedding the SA into an ytterbium-doped fiber laser cavity, self-starting Q-switched performance was realized at a bleaching threshold of 179 mW having a minimum pulse width of 2.92 μs and maximum pulse energy of 9.26 nJ with variable repetition rates from 14.8 to 71.3 kHz. By boosting the pump power and proper adjustment of the polarization controller, steady dual-and triple-wavelength operations were obtained at pump powers of 210 and 275 mW, respectively. The obtained results confirm the practical use of WO 3 as an effective nonlinear modulator for multiwavelength and pulsed fiber lasers near 1 μm wavelength band. K E Y W O R D S multiwavelength, passive saturable absorber, Q-switching, tungsten oxide nanoparticles, YDFL

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“…However, due to the inherent homogenous broadening of the EDFL, it is difficult to achieve stable multiwavelength at room temperature [5]. A variety of approaches have been proposed to mitigate the gain competition between the lasing lines, such as four-wave mixing (FWM), nonlinear polarization rotation and stimulated Brillouin scattering [6][7][8]. In the ring cavity configuration, a comb filter can be inserted to achieve multiwavelength lasing.…”

Section: Introductionmentioning

confidence: 99%

Multiwavelength Q-switched erbium-doped fibre laser-based aluminum nanoparticles saturable absorber and sagnac loop filter

Salman

Al‐Janabi

2019

Laser Phys.

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In this paper, we experimentally demonstrate a stable multiwavelength Q-switched erbiumdoped fiber laser generation based on aluminum nanoparticles (AlNPs) as the saturable absorber (SA), with the aid of a Sagnac loop filter for the first time, to the best of author's knowledge. The fabricated AlNPs-SA has a modulation depth, a non-saturable loss and saturable intensity of 7%, 10% and 0.0015 MW cm −2 , respectively. By carefully adjusting the polarization controller and progressively increasing the pump power, up to 11 lasing lines in the Q-switching regime are obtained with a channel spacing and an optical signalto-noise ratio of 0.48 nm and 30 dB, respectively. Meanwhile, the Q-switched performance has a minimum pulse width of 2.36 µs and a maximum pulse repetition rate of 33.45 kHz by varying the pump power to 300 mW. The proposed laser may become valuable for numerous applications such as dense wavelength division multiplexing technology.

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Tunable Multiwavelength Ytterbium-Doped Fiber Laser Based on Nonlinear Polarization Rotation

Cited by 11 publications

References 11 publications

Large dynamic range operation of ultra-higher number MWFLs affected by MZI-SI

Large dynamic range operation of ultra-higher number MWFLs affected by MZI-SI

Triple‐wavelength Q‐switched ytterbium‐doped fiber laser based on tungsten oxide as saturable absorber

Multiwavelength Q-switched erbium-doped fibre laser-based aluminum nanoparticles saturable absorber and sagnac loop filter

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