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Coexistence of noise-like pulse and dark pulse in an Er/Yb co-doped fiber laser

Chinese Optics Letters 2024年第5期22卷 68-74页

作者：李婧王春灿王鹏 Key Laboratory of All Optical Network and Advanced Telecommunication Network Ministry of EducationInstitute of Lightwave TechnologyBeijing Jiaotong UniversityBeijing 100044China

The coexistence of a noise-like pulse(NLP)and a dark pulse was experimentally demonstrated in a net-anomalous dispersion Er/Yb co-doped fiber(EYDF)laser,for the first time,to our *** cavity was mode-locked by nonlinear polarization rotation(NPR)***,a sagnac loop with a section of polarization-maintaining fiber(PMF)was used as a comb filter to enable multiwavelength pulse *** the PMF length was 0.3 m,an asymmetric two-peak spectrum with central wavelengths of 1565.3 and 1594.2 nm was obtained by adjusting polarization controllers(PCs).It is a composite state of NLP and dark pulse due to the cross-phase modulation between the two different wavelength components along orthogonal polarization *** two pulses are synchronized with a repetition rate of 7.53 *** adjusting the PC in the sagnac loop,the spectral ranges of NLPs and dark pulses can be tuned from 1560 to 1577.8 nm and from 1581.8 to 1605.4 nm,*** addition,the pulse characteristics were investigated by incorporating the PMF with different lengths,where the coexistence patterns can be generated when the PMF lengths were 0.2 and 0.3 m.A longer PMF can lead to a narrowband comb filtering,which causes a larger loss and is not favorable for stable operation of the coexistence *** fiber laser demonstrates an interesting operation regime and has significant potential for numerous practical applications.

关键词： coexistence state mode-locked fiber laser sagnac loop tunable wavelength

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A Novel Optical Envelope Band-pass Filter for Grating Sensors Based on Fiber Bragg Grating sagnac loops

A Novel Optical Envelope Band-pass Filter for Grating Sensor...

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2002 3rd International Conference on Microwave and Millimeter Wave Technology

作者： Qian Jingren Liang Ming Dept.EEIS Univ.of Sci.and Tech.of China

＜正＞The transmission characteristics of fiber Bragg grating sagnac loops are investigated theoretically and *** envelope band-pass-filters of asymmetric grating sagnac loops which can be applied in fiber grating sen... 详细信息

ISBN: (纸本)078037486X

关键词： Fiber Bragg grating sagnac loop optical band-pass filter

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Tunable Narrow Linewidth Fiber Laser for DWDM Application with a Novel Method

Tunable Narrow Linewidth Fiber Laser for DWDM Application wi...

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8～(th) Sino-Japanese Joint Meeting on Optical Fibre Science and Electromagnetic Theory

作者： Xiaopeng Dong. Chen Yong Department of Electronic Engineering University of Xiamen China Institute of Optical Fiber Research Shanghai University. China

＜正＞ A novel configuration to implement the tunable fiber laser with uniform wavelength spacing for DWDM application is proposed in this paper. The ring type tunable fiber laser consists of an all fiber comb filter used to determine the wavelength spacing, and a piece of fiber grating adjustable to select the discrete lasing wavelength for DWDM application. The all fiber ring type tunable laser posses the advantages of narrow linewidth, easy tuning, uniform wavelength interval, etc. The proposed tunable fiber laser has potential application in the DWDM and other optical systems.

关键词： tunable fiber laser fiber grating sagnac loop

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