Design of highly nonlinear dispersion-flattened square photonic crystal fiber for medical applications

Design of supercontinuum generating photonic crystal fiber at 1.06, 1.31 and 1.55 µm wavelengths for medical imaging and optical transmission systems

“…These nonlinear coefficients values are higher than those ones reported in References [2][3][4]11,12,17]. The confinement losses are less than 10 −1 dB/km in the targeted wavelength range which is lower than Rayleigh scattering loss in conventional fiber [8].…”

“…This l c is very important for estimating the longitudinal resolution l r in air and biological tissue. After calculating l c , longitudinal resolution in air and biological tissue can be estimated [12]. For ultrahigh-resolution OCT imaging l c should be low value because l r is proportional with l c .…”

“…If a Gaussian source line shape is assumed, then the coherence length l c of an OCT system is given by [12]. This l c is very important for estimating the longitudinal resolution l r in air and biological tissue.…”

Design of highly nonlinear dispersion flattened hexagonal photonic crystal fibers for dental optical coherence tomography applications

“…For those designed parameters, the resolution in the depth direction for OCT application at 1.06 m is found about 4.2 m. 13) However, the 1.31 m wavelength has also been considered for applications of OCT in dentistry uses since at 1.31 m the scattering co-efficient of the tooth enamel is lower. 13,14) In ref. 15, authors claimed that a highest free space longitudinal resolution of 2.5 m at a 1.3 m center wavelength is achieved using air-silica microstructure fibers.…”

“…Photonic crystal fibers have been used for different OCT applications very recently. [13][14][15][16][17] In refs. 13 and 14, highly nonlinear dispersion flattened photonic crystal fibers are designed for medical application especially for 1.06 m wavelength band.…”