TY - CHAP
T1 - Supercontinuum Generation in a Silicon Nanowire Embedded Photonic Crystal Fiber for Optical Coherence Tomography Applications
AU - Gunasundari, E.
AU - Senthilnathan, K.
AU - Ramesh Babu, P.
AU - Ebenezar, J.
AU - Nakkeeran, Kaliyaperumal
N1 - KSN wishes to thank CSIR [No: 03(1264)/12/EMR-11] and DST [No: SR/FTP/PS-66/2009], Government of India, for the financial support through the project.
PY - 2017
Y1 - 2017
N2 - In this paper, we design a silicon nanowire embedded photonic crystal fiber (SN-PCF) using fully vectorial finite element method. Further, we analyze the various optical properties, namely, waveguide dispersion and nonlinearity by varying the core diameter from 400 to 500 nm for a wide range of wavelengths from 0.8 to 1.7 μm. The proposed structure exhibits a low second (−0.4909 ps2/m) and third order (0.6595 10−3 ps3/m) dispersions with very high nonlinearity (1358 W−1m−1) for 480 nm core diameter at 0.8 μm wavelength. Besides, we investigate the evolution of supercontinuum at 0.8, 1.3 and 1.55 μm wavelengths for an incredibly low input pulse energy of 2.5 pJ. The numerical results corroborate that the proposed SN-PCF provides a wider supercontinuum bandwidth of 1250 nm at 0.8 μm, 1100 nm at 1.3 μm and 800 nm at 1.55 μm wavelengths. We demonstrate longitudinal resolution of 0.16 μm at 0.8 μm wavelength for ophthalmology and dermatology, 0.41 μm at 1.3 μm wavelength for dental imaging and 0.8 μm at 1.55 μm wavelength also for dental imaging. To our knowledge, these are the highest resolution ever achieved in biological tissue at 0.8, 1.3 and 1.55 μm wavelengths.
AB - In this paper, we design a silicon nanowire embedded photonic crystal fiber (SN-PCF) using fully vectorial finite element method. Further, we analyze the various optical properties, namely, waveguide dispersion and nonlinearity by varying the core diameter from 400 to 500 nm for a wide range of wavelengths from 0.8 to 1.7 μm. The proposed structure exhibits a low second (−0.4909 ps2/m) and third order (0.6595 10−3 ps3/m) dispersions with very high nonlinearity (1358 W−1m−1) for 480 nm core diameter at 0.8 μm wavelength. Besides, we investigate the evolution of supercontinuum at 0.8, 1.3 and 1.55 μm wavelengths for an incredibly low input pulse energy of 2.5 pJ. The numerical results corroborate that the proposed SN-PCF provides a wider supercontinuum bandwidth of 1250 nm at 0.8 μm, 1100 nm at 1.3 μm and 800 nm at 1.55 μm wavelengths. We demonstrate longitudinal resolution of 0.16 μm at 0.8 μm wavelength for ophthalmology and dermatology, 0.41 μm at 1.3 μm wavelength for dental imaging and 0.8 μm at 1.55 μm wavelength also for dental imaging. To our knowledge, these are the highest resolution ever achieved in biological tissue at 0.8, 1.3 and 1.55 μm wavelengths.
U2 - 10.1007/978-3-319-44890-9_8
DO - 10.1007/978-3-319-44890-9_8
M3 - Chapter
SN - 9783319448893
T3 - Springer Proceedings in Physics
SP - 71
EP - 88
BT - Recent Trends in Materials Science and Applications
A2 - Ebenezar, Jeyasingh
PB - Springer
T2 - International Conference on Recent Trends in Materials Science and Applications
Y2 - 29 February 2016 through 29 February 2016
ER -