Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79820
Title: Performance optimization of hollow-core fiber photothermal gas sensors
Authors: Lin, YC 
Jin, W 
Yang, F 
Tan, YZ 
Ho, HL 
Issue Date: 2017
Publisher: Optical Society of America
Source: Optics letters, 15 Nov. 2017, v. 42, no. 22, p. 4712-4715 How to cite?
Journal: Optics letters 
Abstract: We report performance optimization of hollow-core photonic bandgap fiber (HC-PBF) photothermal (PT) gas sensors. The PT phase modulation efficiency of a C2H2 filled HC-PBF (HC-1550-02) is found independent of the pump modulation frequency for up to similar to 330 kHz, but starts to drop quickly to 10% of the maximum value at a couple of megahertz. With a 1.1 m long HC-PBF gas cell with angle-cleaved single-mode fiber/ HC-PBF joints to reduce reflection and a modified 3 x 3 Sagnac interferometer with balanced detection for phase demodulation, a noise equivalent concentration of similar to 67 ppb C2H2 is achieved with a 1 s time constant, and it goes down to similar to 18 ppb with 145 s integration time. The system has good long-term stability and exhibits signal fluctuations of < 1% over a similar to 5 h period.
URI: http://hdl.handle.net/10397/79820
ISSN: 0146-9592
EISSN: 1539-4794
DOI: 10.1364/OL.42.004712
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

2
Citations as of Jan 10, 2019

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
Citations as of Jan 14, 2019

Page view(s)

1
Citations as of Jan 14, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.