Designing Tunable Miniaturized Spectroscopic Gas Sensor Using Optofluidic Hollow-Core Photonic Crystal Fiber

Abstract

A tunable optofluidic slow-light hollow-core photonic crystal fiber (HPCF), applicable to miniaturized spectroscopic gas sensors is proposed. We present numerical results showing how this optofluidic structure can be used for gas detection.

Photonic Crystal Fiber Sensors, Literature Review, Challenges, and Some Novel Trends

“…The PCF-based fuel adulteration sensor hollow core gives more space for the target sample to be accommodated within the core. Furthermore, because of the photonic band gap (PBG) effect and the higher core area that can support a higher amount of samples, there is a close relation between the wave and the infused sample in this PCFs [31][32][33]. Furthermore, when compared to porous core PCFs, the core region has more signal power, ensuring increased sensitivity [34].…”

“…It can be expressed by taking the distinction between the effective refractive indexes of the fiber's x and y-polarization modes. It is given by equation 8 [31]: (8) Where the refractive index of the x and yorthogonal polarization modes is denoted by n x and n y respectively. Birefringence is used to measure the polarization property of PCF.…”