Construction of multiple anti-resonant light guidance mechanisms in a hollow core fiber structure for simultaneous measurement of multiple parameters

Dejun Liu, Ziyi Huang, Qiang Wu, Long Yan, Ke Tian, Changyu Shen, Gerald Farrell, Yuliya Semenova, Pengfei Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Construction of multiple light guidance mechanisms in a hollow core fiber (HCF) structure has been popular to realize simultaneous measurement of multiple parameters. In this work, a partially coating method is proposed to excite multiple anti-resonant light guidance mechanisms (ARLGMs) in an HCF structure for simultaneous measurement of multiple parameters. As an example, a double ARLGMs is demonstrated theoretically and experimentally based on a partially polyimide (PI)-coated HCF structure for simultaneous measurement of relative humidity (RH) and temperature. Dip (dip II) produced by the PI-coated HCF section shifts linearly with surrounding RH changes, with a sensitivity of circa 58.6±0.77 pm/%RH, while dip (dip I) produced by the bare HCF section (air coating layer) is insensitive to RH changes. In addition, both types of dips have linear responses to temperature variations, with similar sensitivities of ~ 17 pm/°C. Hence the proposed sensor structure can be used as an RH sensor also capable of compensating local temperature fluctuations. More importantly, simultaneous measurement of multiple parameters (such as biomarkers) is possible using the proposed method provided proper sensing materials are partially coated on the HCF surface.
Original languageEnglish
Number of pages5
JournalOptics Letters
DOIs
Publication statusAccepted/In press - 22 Aug 2022

Fingerprint

Dive into the research topics of 'Construction of multiple anti-resonant light guidance mechanisms in a hollow core fiber structure for simultaneous measurement of multiple parameters'. Together they form a unique fingerprint.

Cite this