Incorporate, switchable dual-wavelength fiber laser with Bragg gratings written in a polarization-maintaining erbium-doped fiber

Mao, Xiangqiao; Yan, Fengping; Wang, Lin; Shen, Feng; Peng, Jian; Jian, Shuisheng

doi:10.1016/j.optcom.2008.09.062

Cited by 25 publications

(16 citation statements)

References 11 publications

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“…The maximum output power is 14.67 W when the pump power is 24 W, corresponding to an optical efficiency of 61.1%. To the best of our knowledge, the optical efficiency obtained in this work is the second highest optical efficiency having been reported concerning dual-wavelength YDF lasers [11]. Such a result can be attributed to(Yes, it should be: can be attributed to) the gain asymmetry of YDF.…”

Section: Resultssupporting

confidence: 55%

“…Compared to Er-doped fibers, the advantage of ytterbium (Yb)-doped fiber (YDF) is the high absorption coefficient, which means that a relatively shorter length of YDF is enough for signal amplification [11,12]. Similarly to EDF, the output spectrum of YDF is also homogeneous broadening, and polarization hole burning (PHB) is, as an important approach, widely utilized to generate dual-wavelength output in YDF lasers.…”

Section: Introductionmentioning

confidence: 99%

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High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

Liu¹,

Huang²,

Wei³

et al. 2016

Journal of the Optical Society of Korea

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A single-and dual-wavelength switchable polarized Yb-doped double-clad fiber laser around 1120 nm based on a pair of fiber Bragg gratings (FBGs) is demonstrated. The polarization-maintaining (PM) linear cavity is composed of a double clad PM Yb-doped fiber (YDF) and a pair of PM FBGs. The laser can operate in stable dual-wavelength or wavelength-switching modes due to the polarization hole burning (PHB) and the spatial hole burning (SHB) enhanced by the PM linear cavity. In dual-wavelength operation, the two orthogonally polarized wavelengths are centered at 1118.912 nm and 1119.152 nm, with an interval of 0.24 nm and a signal to noise ratio (SNR) of 35 dB. The maximum output power is 14.67 W when the launched LD pump is 24 W corresponding to an optical efficiency of 61.1%. The lasing lines switchover may be realized by adjusting the polarization controller (PC) fitted in the cavity. The two single-wavelengths are 1118.912 nm and 1119.152 nm. When the injected LD pump is 24 W, the highest output powers are 7.68 W and 8.64 W corresponding to optical efficiencies of 32% and 36% respectively. The spectral linewidth of the lasing lines are 0.075 nm and 0.07 nm, and the average numerical values of PER are 20.3 dB and 19.9 dB, respectively.

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

Liu¹,

Huang²,

Wei³

et al. 2016

Journal of the Optical Society of Korea

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“…This is the major factor which suppresses the blue-shifted emission. The conclusion has great significance in controlling the blue-shifted emission in the normal dispersion regime of BPCF and developing light source for ultrahigh-resolution optical coherence tomography [13,18].…”

Section: Discussionmentioning

confidence: 87%

Generation and controlling of the dispersive wave by femtosecond pulses propagating in the normal dispersion regimes of the birefringent photonic crystal fiber

Zheng

Yin

et al. 2010

Sci. China Phys. Mech. Astron.

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This paper studies the generation of the dispersive wave (DW) in the normal dispersion regimes of the birefringent photonic crystal fiber (BPCF) fabricated in this work. The remarkable blue-shifted radiation is found to be generated when 30 fs pulses are input in the normal dispersion regime of the BPCF for the first time. The characteristics of the blue-shifted DW strongly depend on the polarization of the input pulse. As a result, two peaks appear in the blue-shifted region of the spectrum when the input pulses polarize along the slow axis of the BPCF. With the increase of the center wavelength of the initial input pulse, the difference between the wavelengths of the two peaks widens. The peak location in the spectrum can be explained by the phase matching condition between the DW and the input pulse. In addition, when the input polarization is set to an angle of 45° with respect to the principal axes of the BPCF, the cross-phase modulation and coherent coupling between two orthogonally polarized modes would result in pulse trapping in the BPCF. Accordingly, the DW shift toward short wavelength is restrained. The DW generation in the normal-dispersion regimes of BPCF can be controlled by the phase matching condition and polarization of the input pulse. birefringent photonic crystal fiber, normal dispersion, dispersive wave, pulse trapping PACS: 42.81.Qb, 42.65.Tg

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“…Independent control over number of lasing lines without affecting channel spacing is challenging. The other type is based on the wavelength-selected feature of FBG or long-period grating (LPG), including FBGs incorporated with an array waveguide grating [16], cascaded FBGs [17], cascaded mismatching LPGs with high-birefringence Sagnac loop mirror [18], and FBGs written in birefringence fibers [19]. Since both the FBG and LPG are the wavelength selectors, it is convenient to obtain the switching operation of lasing lines at specific wavelength.…”

Section: Introductionmentioning

confidence: 99%

“…The increase in the FBG or LPG number would result in higher insert loss and larger complexity of the system. Thus, in practice the number of the switchable wavelength is rarely beyond five in one laser [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

Quan

Tian

et al. 2015

Appl. Phys. B

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four-wave mixing [1,2], polarization hole burning [3,4], frequency shift feedback [5], intensity-dependent loss (IDL) [6][7][8][9], phase modulation [10], stimulated Brillouin scattering [11], etc. In practical applications, it highly demands tunable MWEDFL which allows that both the number and the wavelength of lasing lines can be tunable for a better convenience.In order to build tunable MWEDFL, there are two primary methods. The first type is based on the IDL effect. IDL effect is usually induced by nonlinear optical loop mirror (NOLM) or nonlinear polarization rotation (NPR), in which input signal with higher power obtains higher loss than the one with lower power when it feedbacks to the laser cavity. This feature can be used as an intensity equalizer to suppress the mode competition and obtain the stable multiwavelength oscillation [6-9]. As the multiwavelength lasing oscillation is a balance between IDL and mode competition, the change in IDL breaks the original balance state, resulting in the change in number and wavelength of lasing lines. Through IDL modulation, the adjustments for number of lasing lines within dozens amount and wavelength range shift within 30 nm have been experimentally demonstrated [6]. However, because the comb filter is not tunable, the channel wavelength is fixed. In wavelength tuning, the lasing lines just jump among channels defined by the comb filter, meaning the scanning resolution is determined by the channel spacing [6,8].The other method is actively tuning the transmission spectrum of a comb filter and consequently tuning multiwavelength lasing output characteristics, such as lasing lines number and wavelength. There are also two types of tunable comb filters that have been studied for this purpose. The first type of filter is based on the tunable periodic comb filter, including birefringence fiber filter (BFF) [9], MachZehender interferometer (MZI) [10,12], superimposed Abstract A tunable multiwavelength erbium-doped fiber laser (MWEDFL) based on nonlinear optical loop mirror (NOLM) and tunable birefringence fiber filter (BFF) is proposed and demonstrated. By combination of intensitydependent loss modulation induced by NOLM and pump power adjustment, the proposed laser can achieve independent control over the number of lasing lines, without affecting other important characteristics such as channel spacing and peak location. In addition, the laser allows wavelength tuning with both the peak location and the spectral range of lasing lines controllable. Specifically, the peak location of lasing lines can be controlled to scan the whole spectral range between adjacent channels of comb filter by adjusting the BFF. Moreover, the spectral range of lasing lines can be controlled by adjusting NOLM. This tunable MWEDFL may be useful for fiber-optic communication and fiber-optic sensing.

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Incorporate, switchable dual-wavelength fiber laser with Bragg gratings written in a polarization-maintaining erbium-doped fiber

Cited by 25 publications

References 11 publications

High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

Generation and controlling of the dispersive wave by femtosecond pulses propagating in the normal dispersion regimes of the birefringent photonic crystal fiber

Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

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