scholarly journals Hybrid hollow-core polarization-maintaining fiber with high birefringence and wide single mode bandwidth

2021 ◽  
Vol 29 ◽  
pp. 104725
Author(s):  
Yuru Guo ◽  
Xin Wang ◽  
Zhen Xing ◽  
Shuqin Lou
Keyword(s):  
Single Mode ◽  
Hollow Core ◽  
Core Polarization ◽  
High Birefringence ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

Intensity-demodulated torsion sensor based on thin-core polarization-maintaining fiber

2018 ◽  
Vol 57 (13) ◽  
pp. 3474 ◽  
Author(s):  
Xuexue Kang ◽  
Weigang Zhang ◽  
Yanxin Zhang ◽  
Jiang Yang ◽  
Lei Chen ◽  
...  
Keyword(s):  
Core Polarization ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

Refractive index and temperature sensing characteristics of an optical fiber sensor based on a tapered single mode fiber/polarization maintaining fiber

2016 ◽  
Vol 14 (5) ◽  
pp. 050604-50608
Author(s):  
Zaihang Yang Zaihang Yang ◽  
Hao Sun Hao Sun ◽  
Tingting Gang Tingting Gang ◽  
Nan Liu Nan Liu ◽  
Jiacheng Li Jiacheng Li ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Temperature Sensing ◽  
Fiber Sensor ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining ◽  
Sensing Characteristics

scholarly journals Up-down Taper Based In-Fiber Mach-Zehnder Interferometer for Liquid Refractive Index Sensing

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5440 ◽  
Author(s):  
Xiaopeng Han ◽  
Chunyu Liu ◽  
Shengxu Jiang ◽  
Shuo Leng ◽  
Jiuru Yang
Keyword(s):  
Refractive Index ◽  
Temperature Fluctuation ◽  
Extinction Ratio ◽  
Single Mode ◽  
Zehnder Interferometer ◽  
Structure Parameters ◽  
Refractive Index Sensing ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining ◽  
Mach Zehnder Interferometer

A novel in-fiber Mach-Zehnder interferometer based on cascaded up-down-taper (UDT) structure is proposed by sandwiching a piece of polarization maintaining fiber between two single-mode fibers (SMF) and by utilizing over-fusion splicing method. The dual up tapers respectively act as fiber splitter/combiner, the down taper acts as an optical attenuator. The structure parameters are analyzed and optimized. A larger interference fringe extinction ratio ~15 dB is obtained to achieve refractive index (RI) sensing based on intensity demodulation. The experimental results show that the RI sensitivity is −310.40 dB/RIU with the linearity is improved to 0.99 in the range of 1.3164–1.3444. The corresponding resolution can reach 3.22 × 10−5 RIU, which is 6.8 times higher than wavelength demodulation. The cross sensitivity which caused by temperature fluctuation is less than 1.4 × 10−4.

A Single-Mode Polarization Maintaining Hollow Core Photonic Bandgap Fiber

2016 ◽  
Vol 28 (22) ◽  
pp. 2617-2620 ◽  
Author(s):  
Kan Chen ◽  
Chenge Wang ◽  
Huizhu Hu ◽  
Xiaowu Shu ◽  
Cheng Liu
Keyword(s):  
Photonic Bandgap ◽  
Single Mode ◽  
Hollow Core ◽  
Photonic Bandgap Fiber ◽  
Polarization Maintaining

scholarly journals Fiber Twist-based Wavelength Tunability in Tapered Optical Fiber Filters

2020 ◽  
Vol 28 (4) ◽  
Author(s):  
Maisarah Mansor ◽  
Afiqah Mohd Nawi ◽  
Nadiah Husseini Zainol Abidin ◽  
Muhammad Firdaus Omar ◽  
Mohd Adzir Mahdi ◽  
...  
Keyword(s):  
Extinction Ratio ◽  
Processing System ◽  
Single Mode ◽  
Physical Structure ◽  
Single Mode Fiber ◽  
Wavelength Shift ◽  
Laser Systems ◽  
Polarization Maintaining Fiber ◽  
Tapered Optical Fiber ◽  
Polarization Maintaining

This work demonstrates the tunability of tapered single mode fiber (SMF) and tapered polarization maintaining fiber (PMF) filters based on fiber twisting method. One end of the tapered fiber was twisted from 0o until 100o using the Vytran Fiber Processing System. Observation on the spectral output shows that the fiber twisting technique is a viable option to impart tunability in tapered fibers with total shift of 15 and 10 nm, respectively for SMF and PMF. Better tunability is observed in the SMF filter due to its simple physical structure and more straightforward interferometry effect but a significantly higher extinction ratio is observed for the PMF filter. Both filters exhibited region of linear wavelength shift with corresponding R2 values of 0.9924 and 0.9294 for SMF and PMF. The simplicity and reliability of the filter may pave the way for the development of a practical and compact tunable all-fiber filter for laser systems.

Advances in polarization-maintaining, single-mode, hollow-core fibers

2016 ◽  
Author(s):  
J. W. Nicholson ◽  
B. J. Mangan ◽  
R. S. Windeler ◽  
T. Kremp ◽  
G. Puc ◽  
...  
Keyword(s):  
Single Mode ◽  
Hollow Core ◽  
Polarization Maintaining

scholarly journals A High-Birefringence Microfiber Sagnac-Interferometer Biosensor Based on the Vernier Effect

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4114 ◽  
Author(s):  
Xue-Zhou Wang ◽  
Qi Wang
Keyword(s):  
Refractive Index ◽  
Sagnac Interferometer ◽  
Refractive Index Sensitivity ◽  
Electrostatic Adsorption ◽  
High Birefringence ◽  
Polarization Maintaining Fiber ◽  
Good Biocompatibility ◽  
Polarization Maintaining ◽  
Index Sensitivity ◽  
Index Unit

We propose a high-sensitive Sagnac-interferometer biosensor based on theVernier effect (VE) with a high-birefringence microfiber. The sensitivity enhancement is achieved by utilizing two cascaded Sagnac interferometers. One of the two interference loops consists of a panda polarization-maintaining fiber as a filter, whilst the other is comprised of high-birefringent microfiber coated Graphene oxide (GO) as a sensing channel. We theoretically analyzed the sensitivity of the sensor and verified it with experiments. The results of the simulation show that the refractive index sensitivity is more than five times that of the fiber sensor based on a single Sagnac loop. The sensitivity of the refractive index in the experiments can reach 2429 nm/refractive index unit (RIU), which is basically in accordance with the simulation. We also use electrostatic adsorption to coat GO on the surface of the sensing channel. GO is employed to adsorb bovine serum albumin (BSA) molecules to achieve the desired detection results, which has good biocompatibility and large specific surface area. The sensitivity to detect BSA can reach 9.097 nm/(mg×mL−1).

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