TY - JOUR
T1 - Comparative Study on Sensing Properties of Fiber-Coupled Microbottle Resonators with Polymer Materials
AU - Li, Hou-Chang
AU - Liu, Bin
AU - Wang, Meng-Yu
AU - Liu, Juan
AU - He, Xing-Dao
AU - Chan, Hau Ping
AU - Lu, Ping
AU - Yuan, Jinhui
AU - Wu, Qiang
PY - 2021/12/1
Y1 - 2021/12/1
N2 - Optical whispering gallery mode (WGM) microbottle resonators based on a variety of polymer materials (benzocyclobutene (BCB), UV88 (Relentless, China) and Loctite3525 (HenKel, Germany)) were fabricated and investigated experimentally. The polymer materials were spin-coated onto the fiber and cured by ultraviolet (UV) light followed by heating to form a microbottle structure of different shapes and diameters. The WGMs were excited by tapered fiber, and the spectral characteristics of all realized microbottle cavities were evaluated, such as quality factor (Q > 104), free spectral range and polarization mode (TE and TM). The temperature and refractive index (RI) sensing performance are analyzed and Q-factor changes during the sensing process. In addition, a newly application of UV light intensity sensing for the polymer microbottle resonators was also demonstrated firstly. According to the experimental results that the microbottle resonator of BCB displays good UV light intensity sensitivity (0.0011 nm/(mw/cm2)) and figure of merit (FOM) (0.0122/(mw/cm2)). This sensor is a simple structure, low-cost material, robust performance, and possesses attractive application prospects in sensing and optical devices.
AB - Optical whispering gallery mode (WGM) microbottle resonators based on a variety of polymer materials (benzocyclobutene (BCB), UV88 (Relentless, China) and Loctite3525 (HenKel, Germany)) were fabricated and investigated experimentally. The polymer materials were spin-coated onto the fiber and cured by ultraviolet (UV) light followed by heating to form a microbottle structure of different shapes and diameters. The WGMs were excited by tapered fiber, and the spectral characteristics of all realized microbottle cavities were evaluated, such as quality factor (Q > 104), free spectral range and polarization mode (TE and TM). The temperature and refractive index (RI) sensing performance are analyzed and Q-factor changes during the sensing process. In addition, a newly application of UV light intensity sensing for the polymer microbottle resonators was also demonstrated firstly. According to the experimental results that the microbottle resonator of BCB displays good UV light intensity sensitivity (0.0011 nm/(mw/cm2)) and figure of merit (FOM) (0.0122/(mw/cm2)). This sensor is a simple structure, low-cost material, robust performance, and possesses attractive application prospects in sensing and optical devices.
KW - Couplings
KW - detection of UV light intensity
KW - Microbottle resonator
KW - Microcavities
KW - Optical fiber polarization
KW - Optical fiber sensors
KW - polymer material
KW - Polymers
KW - Resonators
KW - Sensor
KW - Sensors
KW - Whispering gallery mode
UR - http://www.scopus.com/inward/record.url?scp=85118578914&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85118578914&origin=recordpage
U2 - 10.1109/JSEN.2021.3122441
DO - 10.1109/JSEN.2021.3122441
M3 - RGC 21 - Publication in refereed journal
SN - 1530-437X
VL - 21
SP - 26681
EP - 26689
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 23
ER -