Supercontinuum Generation in Silica Photonic Crystal Fiber at 1.3 μm and 1.65 μm Wavelengths for Optical Coherence Tomography

A new design of all-normal near zero flattened dispersion based on silica photonic crystal fiber is reported to generate an ultra-broadband supercontinuum in the near infrared region. The optimized design offers all normal near zero ultra-flattened dispersion of −7 [ps/nmkm] in the wavelengths range [1000nm–2000nm]. The investigated design allows ultra-broadband supercontinuum spectra of 600nm and 1129nm around wavelengths of 1.3 and 1.65μm with a short device length of 34mm and 8.36mm respectively. The resulting supercontinuums have the potential to enhance the axial resolution of optical coherence tomography systems in ophthalmology field, as they allow 1.24μm and 1.06μm axial resolutions at 1.3μm and 1.65μm pump wavelengths respectively.