Simple method of direct measurement of refractive index change in fiber grating fabrication

1999 ◽  
Author(s):  
Min Li ◽  
Yanbiao Liao ◽  
Enyao Zhang ◽  
Shurong Lai
Keyword(s):  
Refractive Index ◽  
Direct Measurement ◽  
Refractive Index Change ◽  
Fiber Grating ◽  
Simple Method ◽  
Index Change ◽  
Grating Fabrication

Direct measurement of the refractive index change of silicon with optically injected carriers

1996 ◽  
Vol 68 (11) ◽  
pp. 1546-1548 ◽  
Author(s):  
L. S. Yu ◽  
Q. Z. Liu ◽  
Z. F. Guan ◽  
S. S. Lau
Keyword(s):  
Refractive Index ◽  
Direct Measurement ◽  
Refractive Index Change ◽  
Index Change

scholarly journals All fiber dynamic gain equalizer based on a fiber grating with rotary refractive index change

2006 ◽  
Vol 55 (9) ◽  
pp. 4720
Author(s):  
Zhu Tao ◽  
Rao Yun-Jiang ◽  
Wang Ruo-Kun ◽  
Wang Jiu-Ling
Keyword(s):  
Refractive Index ◽  
Refractive Index Change ◽  
Fiber Grating ◽  
Index Change ◽  
Dynamic Gain

Post-exposure processing and refractive index change in hydrogen-loaded/annealed fiber grating

Optik ◽  
2016 ◽  
Vol 127 (11) ◽  
pp. 4605-4609
Author(s):  
Peng Jiang ◽  
Weihong Bi ◽  
Yuefeng Qi ◽  
Yang Wu ◽  
Feng Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Change ◽  
Fiber Grating ◽  
Index Change ◽  
Post Exposure

scholarly journals Critical angle reflection imaging for quantification of molecular interactions on glass surface

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guangzhong Ma ◽  
Runli Liang ◽  
Zijian Wan ◽  
Shaopeng Wang
Keyword(s):  
Refractive Index ◽  
Small Molecule ◽  
Molecular Interactions ◽  
Glass Surface ◽  
Critical Angle ◽  
Dynamic Range ◽  
Refractive Index Change ◽  
Label Free ◽  
Index Change ◽  
Sensing Range

AbstractQuantification of molecular interactions on a surface is typically achieved via label-free techniques such as surface plasmon resonance (SPR). The sensitivity of SPR originates from the characteristic that the SPR angle is sensitive to the surface refractive index change. Analogously, in another interfacial optical phenomenon, total internal reflection, the critical angle is also refractive index dependent. Therefore, surface refractive index change can also be quantified by measuring the reflectivity near the critical angle. Based on this concept, we develop a method called critical angle reflection (CAR) imaging to quantify molecular interactions on glass surface. CAR imaging can be performed on SPR imaging setups. Through a side-by-side comparison, we show that CAR is capable of most molecular interaction measurements that SPR performs, including proteins, nucleic acids and cell-based detections. In addition, we show that CAR can detect small molecule bindings and intracellular signals beyond SPR sensing range. CAR exhibits several distinct characteristics, including tunable sensitivity and dynamic range, deeper vertical sensing range, fluorescence compatibility, broader wavelength and polarization of light selection, and glass surface chemistry. We anticipate CAR can expand SPR′s capability in small molecule detection, whole cell-based detection, simultaneous fluorescence imaging, and broader conjugation chemistry.

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