TY - JOUR
T1 - A highly sensitive, polarization maintaining photonic crystal fiber sensor operating in the THz regime
AU - Rana, Sohel
AU - Kandadai, Nirmala
AU - Subbaraman, Harish
N1 - Publisher Copyright:
© 2018 by the author.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - In this paper, a high sensitivity, polarization preserving photonic crystal fiber (PCF), based on circular air holes for sensing in the terahertz (THz) band, is presented. The finite element method, a practical and precise computational technique for describing the interactions between light and matter, is used to compute the modal properties of the designed fiber. For the designed PCF, comprising of circular air holes in both the cladding and in the porous core, a relative sensitivity of 73.5% and a high birefringence of 0.013 are achieved at 1.6 THz. The all circular air-hole structure, owing to its simplicity and compatibility with the current fiber draw technique for PCF fabrication, can be realized practically. It is anticipated that the designed fiber can be employed in applications such as detection of biological samples and toxic chemicals, imaging, and spectroscopy.
AB - In this paper, a high sensitivity, polarization preserving photonic crystal fiber (PCF), based on circular air holes for sensing in the terahertz (THz) band, is presented. The finite element method, a practical and precise computational technique for describing the interactions between light and matter, is used to compute the modal properties of the designed fiber. For the designed PCF, comprising of circular air holes in both the cladding and in the porous core, a relative sensitivity of 73.5% and a high birefringence of 0.013 are achieved at 1.6 THz. The all circular air-hole structure, owing to its simplicity and compatibility with the current fiber draw technique for PCF fabrication, can be realized practically. It is anticipated that the designed fiber can be employed in applications such as detection of biological samples and toxic chemicals, imaging, and spectroscopy.
KW - Far infrared or THz
KW - Fiber sensor
KW - Modal birefringence
KW - Photonic crystal fiber
KW - Relative sensitivity
UR - http://www.scopus.com/inward/record.url?scp=85058704496&partnerID=8YFLogxK
U2 - 10.3390/photonics5040040
DO - 10.3390/photonics5040040
M3 - Article
AN - SCOPUS:85058704496
SN - 2304-6732
VL - 5
JO - Photonics
JF - Photonics
IS - 4
M1 - 40
ER -