Technique for highly sensitive measurement of Raman gain coefficient of optical fiber using pump/signal sum-frequency lock-in-detection

2006 ◽  
Author(s):  
K.S. Abedin
Keyword(s):  
Optical Fiber ◽  
Gain Coefficient ◽  
Raman Gain ◽  
Sum Frequency ◽  
Highly Sensitive ◽  
Pump Signal ◽  
Lock In

Highly-sensitive optical fiber temperature sensors based on PDMS/silica hybrid fiber structures

2018 ◽  
Vol 284 ◽  
pp. 22-27 ◽  
Author(s):  
Han Gao ◽  
Haifeng Hu ◽  
Yong Zhao ◽  
Jin Li ◽  
Ming Lei ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Temperature Sensors ◽  
Hybrid Fiber ◽  
Highly Sensitive ◽  
Silica Hybrid

scholarly journals Immunosensor Based on Long-Period Fiber Gratings for Detection of Viruses Causing Gastroenteritis

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 813 ◽  
Author(s):  
Marta Janczuk-Richter ◽  
Beata Gromadzka ◽  
Łukasz Richter ◽  
Mirosława Panasiuk ◽  
Karolina Zimmer ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Medical Diagnostics ◽  
Label Free ◽  
Fiber Gratings ◽  
Fast Detection ◽  
Long Period ◽  
Highly Sensitive ◽  
Protein Receptors ◽  
Long Period Fiber Gratings ◽  
Vaccine Testing

Since the norovirus is the main cause of acute gastroenteritis all over the world, its fast detection is crucial in medical diagnostics. In this work, a rapid, sensitive, and selective optical fiber biosensor for the detection of norovirus virus-like particles (VLPs) is reported. The sensor is based on highly sensitive long-period fiber gratings (LPFGs) coated with antibodies against the main coat protein of the norovirus. Several modification methods were verified to obtain reliable immobilization of protein receptors on the LPFG surface. We were able to detect 1 ng/mL norovirus VLPs in a 40-min assay in a label-free manner. Thanks to the application of an optical fiber as the sensor, there is a possibility to increase the user’s safety by separating the measurement point from the signal processing setup. Moreover, our sensor is small and light, and the proposed assay is straightforward. The designed LPFG-based biosensor could be applied in both fast norovirus detection and in vaccine testing.

A highly sensitive optical fiber temperature sensor based on the enhanced Vernier effect

2021 ◽  
Vol 67 ◽  
pp. 102702
Author(s):  
Weidong Luo ◽  
Zhigang Cao ◽  
Guosheng Zhang ◽  
Fanyu Liu ◽  
Bin Liu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Temperature Sensor ◽  
Highly Sensitive ◽  
Vernier Effect
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