All-Fiber Q-Switched Erbium-Doped Fiber Ring Laser Using Phase-Shifted Fiber Bragg Grating

Cheng, Xiangguo; Tse, Chun Ho; Shum, Perry Ping; Wu, Rui; Tang, Ming; Tan, W.C.; Zhang, Jie

doi:10.1109/jlt.2008.917370

Cited by 27 publications

(11 citation statements)

References 18 publications

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“…The pulse interval is 19.20 s, which corresponds to a repetition rate of 52.083 kHz. The sub-megahertz repetition rate obtained here is relatively low compared with previous experiments using passive Qswitched all-fiber lasers [7,8,9].…”

Section: Resultsmentioning

confidence: 54%

“…Hence, the energy of the pulses propagating in the laser cavity is 10.880 nJ. Compared with the previous research work investigating all-fiber lasers operating in passive Q-switching state [7,8,9], the pulse energy obtained from this laser is in the nano-joul range and can be considered as high. By further increasing the pump power as well as reducing the loss in the cavity, higher energy pulses are expected to be achieved.…”

Section: Resultsmentioning

confidence: 87%

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Passive Q-switching in 25-km ultra long cavity all-fiber ring laser

Xue

Wong

et al. 2011

2011 8th International Conference on Information, Communications &Amp; Signal Processing

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In this paper, passive Q-switching is investigated in a 25 km ultra long cavity all-fiber ring laser operating in anomalous dispersion regime. We experimentally demonstrate Qswitched pulses with kHz repetition rate and nano-joule scale pulse energy. More specifically, we obtain a Q-switched pulse train with 52.083 kHz repetition rate and average pulse energy of 10.880 nJ. The Q-switching state threshold for this laser cavity is found to be 420 mW. Stable Q-switching state is observed when the pump power exceeds 570 mW. As our setup has limited pump power, mode-locked state is not observed. However, by implementing a laser diode pump with higher pump power together with a longer length of erbium-doped fiber (EDF) as well as a lower overall cavity loss, this scheme has the potential to achieve mode-locking state.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 87%

Passive Q-switching in 25-km ultra long cavity all-fiber ring laser

Xue

Wong

et al. 2011

2011 8th International Conference on Information, Communications &Amp; Signal Processing

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“…Among these, the FBG has attracted huge interest for the design, testing, and evaluation of dispersion compensation units, as its effectiveness is due mainly to its complete passiveness, compactness, relatively low cost, low insertion loss, fiber compatibility, and lack of nonlinear effects [8]. Note that FBG is used in a huge range of optical telecommunication applications other than dispersion compensation, such as fiber laser reflectors [9,10], wavelength division multiplexing (WDM) devices [11], optical pulse compression [12], tunable optical delay [13], optical filters [14,15], optical signal generation/shaping [16][17][18], and optical sensors [19,20].…”

Section: Introductionmentioning

confidence: 99%

Design and performance evaluation of a dispersion compensation unit using several chirping functions in a tanh apodized FBG and comparison with dispersion compensation fiber

2014

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In this work, various dispersion compensation methods are designed and evaluated to search for a cost-effective technique with remarkable dispersion compensation and a good pulse shape. The techniques consist of different chirp functions applied to a tanh fiber Bragg grating (FBG), a dispersion compensation fiber (DCF), and a DCF merged with an optimized linearly chirped tanh FBG (joint technique). The techniques are evaluated using a standard 10 Gb/s optical link over a 100 km long haul. The linear chirp function is the most appropriate choice of chirping function, with a pulse width reduction percentage (PWRP) of 75.15%, lower price, and poor pulse shape. The DCF yields an enhanced PWRP of 93.34% with a better pulse quality; however, it is the most costly of the evaluated techniques. Finally, the joint technique achieved the optimum PWRP (96.36%) among all the evaluated techniques and exhibited a remarkable pulse shape; it is less costly than the DCF, but more expensive than the chirped tanh FBG.

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“…This approach ensures narrow-band lasing because there is no spatial hole burning effect. To obtain a spectrum of the order of several kilohertz in width or even narrower, use is commonly made of intracavity filters (such as narrow-band Fabry - Perot filters [7] and phase-shifted fibre Bragg gratings [6]). The simplest, and effective, way of narrowing a spectrum and improving emission stability is by using an unpumped active fibre section, which, in combination with a Bragg grating, forms a dynamic narrow-band filter with a transmission bandwidth in the order of several tens of megahertz [2,4,5].…”

Section: Introductionmentioning

confidence: 99%

Narrow-band erbium-doped fibre linear–ring laser

Kolegov¹,

Sofienko²,

Minashina³

et al. 2014

Quantum Electron.

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We have demonstrated a narrow-band linear -ring fibre laser with an output power of 15 mW at a wavelength of 1.55 mm and an emission bandwidth less than 5 kHz. The laser frequency is stabilised by an unpumped active fibre section and fibre Bragg grating. The fibre laser operates in a travelling wave mode, which allows the spatial hole burning effect to be avoided. At a certain pump power level, the laser switches from continuous mode to repetitivepulse operation, corresponding to relaxation oscillations.

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All-Fiber Q-Switched Erbium-Doped Fiber Ring Laser Using Phase-Shifted Fiber Bragg Grating

Cited by 27 publications

References 18 publications

Passive Q-switching in 25-km ultra long cavity all-fiber ring laser

Passive Q-switching in 25-km ultra long cavity all-fiber ring laser

Design and performance evaluation of a dispersion compensation unit using several chirping functions in a tanh apodized FBG and comparison with dispersion compensation fiber

Narrow-band erbium-doped fibre linear–ring laser

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