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Propagation characteristics of photonic crystal fibers selectively filled with ionic liquid

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Nanotechnology and Precision Engineering 2021年第1期4卷 1-6页

作者： Xiaoqi liu yange liu Zhi Wang Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern OpticsNankai UniversityTianjin 300350China

We present a numerical and experimental study of the propagation characteristics of photonic crystal fibers(PCFs)selectively filled with ionic liquid(IL;1-butyl-3-methylimidazolium iodine).Three types of IL-filled PCF are investigated:one with all air holes filled,one with an IL-filled air hole in the second ring,and one with an IL-filled air hole in the third *** results show that the third type of IL-filled PCF is the most sensitive to temperature;the sensitivity of resonant dips between the LP01 and LP21 modes is−2.9 nm/***,the intensity of the resonant dips changes with the polarization angle of the light source;the sensitivity is−0.79 dB per unit polarization *** on this property,IL-filled PCFs with different utilities can be realized by changing the filling position ***,IL-filled PCFs can be used under flexible conditions and controllable temperatures to create a compact polarization-angle sensor.

关键词： Photonic crystal fiber Ionic liquid Optical sensor Polarization

A biosensor based on a modified S-taper fiber for target protein detection

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Nanotechnology and Precision Engineering 2020年第3期3卷 162-166页

作者： Xiaoqi liu yange liu Zhi Wang Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern OpticsNankai UniversityTianjin 300350China

A biosensor based on a modified S-taper fiber was proposed and experimentally demonstrated for antigen detection. Antibody was immobilized over the activated S-taper waist, where the fiber detected the interaction between the antibody and target antigen. Compared with a unmodified S-taper fiber structure, the silanized fiber had a detection limit of approximately 8.33 × 10-5 RIU when the concentration of antigen solution was changed1%. The antibody and antigen binding processing was monitored in real time by analyzing and investigating the transmission spectral characteristics of the modified S-taper fiber. The cost-effectiveness, real-time detection,and high integration properties of the fiber enable its use in a modal interferometer for biosensing applications including disease diagnosis and biological specificity recognition.

关键词： Photonic crystal fibers Biosensor S-taper fiber Immobilization process

Single mode fiber dislocation Mach-Zehnder interferometer cascaded with fiber Bragg grating for monitoring metal electrochemical corrosion

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Optoelectronics Letters 2023年第11期19卷 653-658页

作者： ZHANG Shuaibo liu Xiaoqi WANG Zhi liu yange Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology Institute of Modern OpticsNankai UniversityTianjin300350China

An optical fiber sensor composed of a dislocation Mach-Zehnder interferometer(MZI) cascaded with a fiber Bragg grating(FBG) is proposed,and it is used to monitor the electrochemical corrosion of metals in *** dislocation interferometer is composed of two segments of single-mode fiber(SMF) and one segment of dislocation *** contact surface is increased between the fiber and the environment,which helps to improve the interference *** relationship between the dislocation amount and the refractive index sensitivity of the interferometer is discussed through *** the experiment,the sensitivity of the interferometer reaches more than 10 000 nm/RIU,and the monitoring of metal electrochemical corrosion is also realized in 3.5% NaCl *** proposed measurement scheme has the advantages of small structure,low cost and high *** has good prospects in chemical reaction monitoring.

关键词： corrosion dislocation fiber

Switchable-multi-wavelength fiber laser based on dual-core all-solid photonic bandgap fiber

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Frontiers of Optoelectronics 2010年第3期3卷 283-288页

作者： Jiaqi ZHAO Zhi WANG yange liu Bo liu Key Laboratory of Opto-Electronic Information and Technology Ministry of Education Institute of Modern Optics Nankai University

In this paper, we propose and demonstrate a switchable multi-wavelength fiber laser based on a dualcore all-solid photonic bandgap fiber(PBGF) comb-like filter. The transmission properties of the dual-core all-solid PBGF are theoretically and experimentally *** the fiber ring laser based on the PBGF is realized and its wavelength-selective mechanisms are studied. By adjusting the polarization controller(PC), the number and location of the laser wavelength can be tunable.

关键词： photonic crystal fiber all-solid photonic bandgap fiber multi-wavelength fiber laser

Deep notch filter based on liquid-filled photonic crystal fiber

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Frontiers of Optoelectronics 2010年第3期3卷 289-291页

作者： Bing ZOU yange liu Zhi WANG Bo liu Key Laboratory of Opto-Electronic Information and Technology Ministry of Education Institute of Modern Optics Nankai University

A deep notch filter in a liquid-filled photonic bandgap fiber（PBGF） realized via filling an erbium-doped solid core photonic crystal fiber with high-index liquid is proposed and demonstrated. The numerical investigation indicates that the notch is formed due to avoid-crossing effect between the fundamental mode and LP02supermodes. The resonance wavelength of the filter can be tuned by adjusting the temperature of the liquid-filled PBGF and shifts toward short wavelength. The blue-shift speed average is 1.3 nm/℃.

关键词： 77\bb\de\e5\hcm0000169451.html

Tunable and narrow linewidth multi-wavelength Brillouin-erbium fiber laser using dual-wavelength pumping

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Optoelectronics Letters 2022年第6期18卷 349-353页

作者： ZHU Kaiyan HE Jiangyong CHANG Kun XING Dengke liu yange WANG Zhi Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern OpticsNankai UniversityTianjin 300350China

We demonstrate a multi-wavelength Brillouin-erbium fiber laser(BEFL)with narrow linewidth and tunable wavelength interval using dual-wavelength Brillouin *** generation of multi-wavelength output in BEFL is based on the combination of stimulated Brillouin scattering(SBS)and four-wave mixing(FWM)effect in a fiber *** tunable wavelength interval is determined by the artificially controlled wavelength interval of the pumping *** BEFL could compress a 1 MHz pump laser to a 340 Hz Brillouin Stokes laser,which proves the BEFL has excellent capability of linewidth *** erbium-doped fiber pumped by 980 nm laser is inserted into the cavity to further amplify the Brillouin *** wideband multi-wavelength BEFL covering over 50 nm is successfully generated when the 980 nm pump power is 400 *** features of multi-wavelength BEFL provide an effective method for optical communication systems and optical fiber sensing.

关键词： pumping fiber laser

Temperature-insensitive and high-precision frequency transfer based on fabricated in-house 1.05 km hollow-core anti-resonant fiber

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Chinese Optics Letters 2024年第10期22卷 25-32页

作者： Yundong Hao Zefeng Li Sensen Meng Bo liu Zhende Zhai Lei Zheng Ye Wang yange liu Institute of Modern Optics Nankai UniversityTianjin 300350China Shenzhen Sublime Photonics Co. Ltd.Shenzhen 518000China

We have prepared kilometer-scale low-loss hollow-core nested anti-resonant nodeless fibers by improving their structural design,which reduces the difficulty of fabricating low-loss hollow-core fibers over long *** lowest loss is 2.7 d B/km at 1506 nm,and this loss is less than 5 d B/km at 1417–1620 ***-precision frequency transfer is achieved using the fabricated 1050 m hollow-core fiber by locking the repetition frequency of the optical frequency comb to a rubidium atomic *** frequency stability is 1.67×10^(-12)/s and 5.66×10^(-14)/1000 s when the temperature is changed,and no phase compensation device is *** is an order of magnitude lower compared to that of the conventional single-mode fiber.

关键词： hollow-core anti-resonant fiber thermal coefficient delay frequency transfer femtosecond comb

Investigation on Brillouin scattering characteristics in photonic crystal fibers

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Frontiers of Optoelectronics 2010年第3期3卷 260-263页

作者： Yuan LI yange liu Junfa ZHAO Boyin TAI Aidong YAN Key Laboratory of Opto-Electronic Information and Technology Ministry of Education Institute of Modern Optics Nankai University

Brillouin scattering characteristics of photonic crystal fibers(PCFs) are investigated theoretically and experimentally in this paper. The results of two kinds of PCFs are compared and discussed, the influences of size of fiber core on the acoustic modes and hence on the Brillouin resonance peaks are explained. Furthermore, the improvement for our research is also presented.

关键词： 46\52\86\52\hcm0000169495.html

Fabrication and characteristics of double-clad fiber Bragg gratings

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Frontiers of Optoelectronics 2009年第1期2卷 68-75页

作者： Lijun LI Wande FAN Shenggui FU yange liu Shuzhong YUAN Xiaoyi DONG College of Information and Electrical Engineering Shandong University of Science and Technology Institute of Modern Optics Nankai University

A double-clad fiber Bragg grating(DCFBG) is a kind of grating which is directly written into the core of a double-clad fiber(DCF). Because of its special structure,DCFBGs have potential applications in fiber communication and sensing. In this paper, some of the recent studies on DCFBG are reviewed, and the photosensitivity and thermal decay of DCFBG fabricated in different DCFs are investigated. The DCFBGs of diversiform reflectivity are fabricated, and the maximum reflectivity of the grating is 99.9%. Finally, the special characteristics of DCFBG, such as nonlinear and stress, are illustrated.

关键词： 17\cd\5a\9c\hcm0000078551.html