Construction of Double Cladding Small Dispersion Photonic Crystal Fiber to Guide Ultrashort Pulse at 800 nm

Abstract

The methods using femtosecond lasers are very popular in the world recently. They are used for dierent research methods. We begin to use a multi-photon autouorescence method for cancer tissue detection. We plan to use this method with special photonic crystal ber optic sensors. We would like to use to this detection femtosecond oscillator for 800 nm region. However, according to our information there is no ber which can provide these femtosecond signals at 800 nm region without dispersion and nonlinear eect. Applying typical ber causes dispersion of guided signals. Therefore we are preparing suitably designed bers. Double-clad photonic bers can play a dual role of ultrashort pulse delivery and ecient collection of nonlinear optical signals. In the paper a new design of double cladding small dispersion photonic crystal ber is proposed. Simulations of both structure and dispersion in proposed bers are presented.

Enhancement of two photon fluorescence collection by using effectively single mode double clad hollow core fiber with low dispersion at 800 nm

“…In our prior work Stawska, Bereś-Pawlik (2012) we showed that it is possible to design double clad fibers with very small dispersion at 800 nm. We analyzed two constructions: one with Ge-doped rods and the other with a hollow core.…”