Gelatin Film Coated Fiber-Optic Directional Coupler-Based Humidity Sensors
نویسندگان
چکیده
منابع مشابه
Polyimide-Coated Fiber Bragg Grating Sensors for Humidity Measurements
Humidity is one of important environmental parameters, which refers to the water vapor content in the air. As one of the fundamental abiotic factors, humidity determines an environment where animals and plants can thrive, also influences the human life. There are three items commonly used to describe humidity, which are absolute humidity (AH), relative humidity (RH) and specific humidity (SH) [...
متن کاملBroadband terahertz fiber directional coupler.
We present the design of a short broadband fiber directional coupler for terahertz (THz) radiation and demonstrate a 3 dB coupler with a bandwidth of 0.6 THz centered at 1.4 THz. The broadband coupling is achieved by mechanically downdoping the cores of a dual-core photonic crystal fiber by microstructuring the cores. This is equivalent to chemical downdoping but is easier to realize experiment...
متن کاملFiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors
This review summarizes principles and current stage of development of fiber-optic chemical sensors (FOCS) and biosensors (FOBS). Fiber optic sensor (FOS) systems use the ability of optical fibers (OF) to guide the light in the spectral range from ultraviolet (UV) (180 nm) up to middle infrared (IR) (10 μm) and modulation of guided light by the parameters of the surrounding environment of the OF...
متن کاملRelative Humidity Sensor Based on No-Core Fiber Coated by Agarose-Gel Film
A relative humidity (RH) sensor based on single-mode-no-core-single-mode fiber (SNCS) structure is proposed and experimentally demonstrated. The agarose gel is coated on the no-core fiber (NCF) as the cladding, and multimode interference (MMI) occurs in the SNCS structure. The transmission spectrum of the sensor is modulated at different ambient relative humidities due to the tunable refractive...
متن کاملFiber-optic modal coupler using periodic microbending.
Periodic coupling between the various modes in an optical fiber is of current interest in interferometric and sensor applications. Coupling between the two cross-polarized modes of a single-mode birefringent fiber has been studied,1 as has coupling between the LP0 1 and LP 11 modes in a circularly symmetric fiber. 2 The latter case was achieved by periodically squeezing the fiber. It has been d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Korean Institute of Electromagnetic Engineering and Science
سال: 2017
ISSN: 1226-3133,2288-226X
DOI: 10.5515/kjkiees.2017.28.11.865