Novel all-fiber optic temperature sensors based on hollow optical fibers

Sangsoo Choi; Yongmin Jung; Tae-Jung Eom; Byeong Ha Lee; Kyunghwan Oh; Hyohyung Lee; DaeHwa Jeong

doi:10.1117/12.571152

25 October 2004 Novel all-fiber optic temperature sensors based on hollow optical fibers

Sangsoo Choi, Yongmin Jung, Tae-Jung Eom, Byeong Ha Lee, Kyunghwan Oh, Hyohyung Lee, DaeHwa Jeong

Proceedings Volume 5602, Optomechatronic Sensors, Actuators, and Control; (2004) https://doi.org/10.1117/12.571152
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

Novel all-fiber optic temperature sensors based on hollow optical fibers (HOFs) are presented. The HOFs with an air hole diameter of 8um at the center are fabricated through elaborate controls of MCVD and fiber drawing process. Two types of all-fiber temperature sensors are described. One is an all-fiber temperature sensor composed of a short HOF serially concatenated between a pair of long-period fiber gratings using a B/Ge-codoped core single mode fiber (SMF). The broadband pass-band tuning range of 84.3nm, covering both S and C band, is observed in the range from 25 to 215°C. Transmission peak is linearly shifted showing negative slope of -0.44nm/°C at 1500nm region. Its design, fabrication arts, and device integration are explained with characteristics of output filter spectrum and temperature tuning. The other is an in-line fiber etalon temperature sensor using a short HOF segment fusion-spliced between standard SMFs. This device is characterized in terms of wavelength shift according to temperature for HOFs with and without Ge-doped ring core. Temperature sensitivity of 3.38×10^-5/°C and dynamic range of 20dB are observed over the range from 25 to 330°C at 1550nm. It is confirmed that the experimental results for both fiber optical sensors show a good agreement with theoretical analysis.

Citation Download Citation

Sangsoo Choi, Yongmin Jung, Tae-Jung Eom, Byeong Ha Lee, Kyunghwan Oh, Hyohyung Lee, and DaeHwa Jeong "Novel all-fiber optic temperature sensors based on hollow optical fibers", Proc. SPIE 5602, Optomechatronic Sensors, Actuators, and Control, (25 October 2004); https://doi.org/10.1117/12.571152

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available