Abstract
Refractive index measurement is important for evaluation of liquid materials, optical components, and bio sensing. One promising approach for such measurement is use of optical fiber sensors such as surface plasmonic resonance or multi-mode interference (MMI), which measure the change of optical spectrum resulting from the refractive index change. However, the precision of refractive index measurement is limited by the performance of optical spectrum analyzer. If such the refractive index measurement can be performed in radio frequency (RF) region in place of optical region, the measurement precision will be further improved by the frequency-standard-based RF measurement. To this end, we focus on the disturbance-to-RF conversion in a fiber optical frequency comb (OFC) cavity. Since frequency spacing frep of OFC depends on an optical cavity length nL, frep sensitively reflects the external disturbance interacted with nL. Although we previously demonstrated the precise strain measurement based on the frep measurement, the measurable physical quantity is limited to strain or temperature, which directly interacts with the fiber cavity itself. If a functional fiber sensor can be installed into the fiber OFC cavity, the measurable physical quantity will be largely expanded. In this paper, we introduce a MMI fiber sensor into a ring-type fiber OFC cavity for refractive index measurement. We confirmed the refractive-index-dependent frep shift.
| Original language | English |
|---|---|
| Title of host publication | Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII |
| Publisher | SPIE |
| Volume | 10488 |
| ISBN (Electronic) | 9781510614611 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
| Event | Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII 2018 - San Francisco, United States Duration: Jan 27 2018 → Jan 28 2018 |
Other
| Other | Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII 2018 |
|---|---|
| Country | United States |
| City | San Francisco |
| Period | 1/27/18 → 1/28/18 |
Fingerprint
Keywords
- fiber sensor
- multi-mode interference
- optical frequency comb
- radio frequency
- refractive index
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Atomic and Molecular Physics, and Optics
- Radiology Nuclear Medicine and imaging
Cite this
Refractive-index-sensing fiber comb using intracavity multi-mode interference fiber sensor. / Oe, Ryo; Minamikawa, Takeo; Taue, Shuji; Fukano, Hideki; Nakajima, Yoshiaki; Minoshima, Kaoru; Yasui, Takeshi.
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII. Vol. 10488 SPIE, 2018. 1048818.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Refractive-index-sensing fiber comb using intracavity multi-mode interference fiber sensor
AU - Oe, Ryo
AU - Minamikawa, Takeo
AU - Taue, Shuji
AU - Fukano, Hideki
AU - Nakajima, Yoshiaki
AU - Minoshima, Kaoru
AU - Yasui, Takeshi
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Refractive index measurement is important for evaluation of liquid materials, optical components, and bio sensing. One promising approach for such measurement is use of optical fiber sensors such as surface plasmonic resonance or multi-mode interference (MMI), which measure the change of optical spectrum resulting from the refractive index change. However, the precision of refractive index measurement is limited by the performance of optical spectrum analyzer. If such the refractive index measurement can be performed in radio frequency (RF) region in place of optical region, the measurement precision will be further improved by the frequency-standard-based RF measurement. To this end, we focus on the disturbance-to-RF conversion in a fiber optical frequency comb (OFC) cavity. Since frequency spacing frep of OFC depends on an optical cavity length nL, frep sensitively reflects the external disturbance interacted with nL. Although we previously demonstrated the precise strain measurement based on the frep measurement, the measurable physical quantity is limited to strain or temperature, which directly interacts with the fiber cavity itself. If a functional fiber sensor can be installed into the fiber OFC cavity, the measurable physical quantity will be largely expanded. In this paper, we introduce a MMI fiber sensor into a ring-type fiber OFC cavity for refractive index measurement. We confirmed the refractive-index-dependent frep shift.
AB - Refractive index measurement is important for evaluation of liquid materials, optical components, and bio sensing. One promising approach for such measurement is use of optical fiber sensors such as surface plasmonic resonance or multi-mode interference (MMI), which measure the change of optical spectrum resulting from the refractive index change. However, the precision of refractive index measurement is limited by the performance of optical spectrum analyzer. If such the refractive index measurement can be performed in radio frequency (RF) region in place of optical region, the measurement precision will be further improved by the frequency-standard-based RF measurement. To this end, we focus on the disturbance-to-RF conversion in a fiber optical frequency comb (OFC) cavity. Since frequency spacing frep of OFC depends on an optical cavity length nL, frep sensitively reflects the external disturbance interacted with nL. Although we previously demonstrated the precise strain measurement based on the frep measurement, the measurable physical quantity is limited to strain or temperature, which directly interacts with the fiber cavity itself. If a functional fiber sensor can be installed into the fiber OFC cavity, the measurable physical quantity will be largely expanded. In this paper, we introduce a MMI fiber sensor into a ring-type fiber OFC cavity for refractive index measurement. We confirmed the refractive-index-dependent frep shift.
KW - fiber sensor
KW - multi-mode interference
KW - optical frequency comb
KW - radio frequency
KW - refractive index
UR - http://www.scopus.com/inward/record.url?scp=85046709889&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046709889&partnerID=8YFLogxK
U2 - 10.1117/12.2289252
DO - 10.1117/12.2289252
M3 - Conference contribution
AN - SCOPUS:85046709889
VL - 10488
BT - Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII
PB - SPIE
ER -