Oct Using Sc- Abstract

OPTICAL COHERENCE TOMOGRAPHY USING SUPERCONTINUUM SOURCE ABSTRACT:Light sources based on supercontinuum (SC) generation provide a combination of desirable features: high fibre output power, a broad and controllable spectrum, low noise, and a high degree of spatial coherence that enables tight focusing. These features make SC sources ideal for several applications such as frequency metrology, femtosecond-pulse phase stabilization, ultrashort pulse compression, spectroscopy of materials and photonic structures, and fibre characterization. The extremely broad bandwidth of SC sources makes them particularly interesting for optical coherence tomography (OCT) imaging systems, since the longitudinal image resolution obtainable in OCT is inversely proportional to the bandwidth and proportional to the square of the centre wavelength of the light source With the development of photonic crystal fibres (PCFs), supercontinuum generation has attracted much attention in the past few years. Filters can be used to tailor the SC spectrum but these induce power-loss and increase the complexity of the system. Furthermore, SC spectra generated in this regime tend to be noisy and unstable, resulting in lower dynamic range of the OCT system and therefore in lower penetration depth and scanning speed. Here, it explains compact, portable, powerful SC light sources suitable for ultrahigh resolution OCT imaging systems, which can be deployed outside the laboratory environment. The SC is generated using various advanced techniques, and are employed as the sources of light for OCT. Finally, ultrahigh resolution OCT imaging is obtained and can be implemented to test on selected materials.

Under the guidance of,

Submitted by,

Dr. S.K. SUDHEER Professor and Division Leader,

SANDEEP. K (08MCE039)

Photonics and Microwave division.

M. Tech Communication Engg.

SES, VIT University

SES, VIT University