Journal
CHINESE OPTICS LETTERS
Volume 18, Issue 2, Pages -Publisher
OSA-OPTICAL SOC
DOI: 10.3788/COL202018.020601
Keywords
long-period grating; optical fiber sensor; refractive index measurement
Categories
Funding
- National Key R&D Program of China [2018YFC1503703]
- National Natural Science Foundation of China [61975039, 61675053, 61775047, 61705051]
- 111 Project [B13015]
- Fundamental Research Funds for Harbin Engineering University of China
Ask authors/readers for more resources
We propose and demonstrate a dual-channel microfluidic sensor based on a side-hole fiber (SHF) with two long-period fiber grating (LPFG) structures. There are two air holes in the SHF, which are natural microfluidic channels. We fabricate two LPFGs (long-period gratings LPG-A and LPG-B) in the SHF with the resonance wavelengths of 1268.7 nm and 1385.8 nm, respectively. Results show that the refractive index sensitivities of LPG-A and LPG-B are -76.0 nm/RIU and -71.1 nm/RIU, respectively. One can measure the refractive index of liquid samples in two channels simultaneously. The proposed dual-channel microfluidic sensor has advantages of good linearity response, fluidic technology compatibility, and easy light input/output coupling and system integration, which helps the sensor to have a potential application in environmental detection and food safety detection.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available