TY - JOUR
T1 - U-shape panda polarization-maintaining microfiber sensor coated with graphene oxide for relative humidity measurement
AU - Chen, Ling
AU - Liu, Bin
AU - Liu, Juan
AU - Yuan, Jinhui
AU - Chan, Hau Ping
AU - Wu, Tao
AU - Wang, Meng-Yu
AU - Wan, Sheng-Peng
AU - He, Xing-Dao
AU - Wu, Qiang
PY - 2021/10/1
Y1 - 2021/10/1
N2 - A new U-shape panda polarization-maintaining fiber
(PPMF) based microfiber interferometer coated with graphene
oxide (GO) film was proposed and experimentally demonstrated
for relative humidity (RH) sensing. Experimental results show
that the U-shape sensor has refractive index (RI) sensitivity of
1692.5 nm/RIU in the RI range of 1.33 when the diameter of the
taper waist is 10.08 µm. The surface of the U-shape sensor was
then modified chemically and coated with a thin layer of GO film
(59.64 nm) for RH detection and the sensitivity is proportional to
RH: as RH increases from 30% to 98%, the sensitivity increases
from 0.111 to 0.361 nm/%RH and the response time is 0.28 s. In addition, the cross sensitivity to temperature, stability, reproducibility, and response/recovery time of the RH sensor were studied in
detail. The proposed U-shape fiber RH sensor has advantage of high
sensitivity, good reproducibility and fast response (0.28 s), which
has potential application in areas requiring dynamic measurement
of RH variations such as industrial product fabrication process
control and breath state monitoring.
AB - A new U-shape panda polarization-maintaining fiber
(PPMF) based microfiber interferometer coated with graphene
oxide (GO) film was proposed and experimentally demonstrated
for relative humidity (RH) sensing. Experimental results show
that the U-shape sensor has refractive index (RI) sensitivity of
1692.5 nm/RIU in the RI range of 1.33 when the diameter of the
taper waist is 10.08 µm. The surface of the U-shape sensor was
then modified chemically and coated with a thin layer of GO film
(59.64 nm) for RH detection and the sensitivity is proportional to
RH: as RH increases from 30% to 98%, the sensitivity increases
from 0.111 to 0.361 nm/%RH and the response time is 0.28 s. In addition, the cross sensitivity to temperature, stability, reproducibility, and response/recovery time of the RH sensor were studied in
detail. The proposed U-shape fiber RH sensor has advantage of high
sensitivity, good reproducibility and fast response (0.28 s), which
has potential application in areas requiring dynamic measurement
of RH variations such as industrial product fabrication process
control and breath state monitoring.
KW - Graphene
KW - graphene oxide
KW - microfiber interferometer
KW - Optical fiber sensors
KW - Optical surface waves
KW - Relative humidity
KW - Sensitivity
KW - Sensors
KW - Silicon
KW - Surface treatment
KW - Ushape fiber
UR - http://www.scopus.com/inward/record.url?scp=85110788087&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85110788087&origin=recordpage
U2 - 10.1109/JLT.2021.3096505
DO - 10.1109/JLT.2021.3096505
M3 - RGC 21 - Publication in refereed journal
SN - 0733-8724
VL - 39
SP - 6308
EP - 6314
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 19
ER -