Photonic crystal optical fibers for dispersion compensation and Raman amplification: Design and experiment

Abstract

An optimal design of photonic crystal optical fibers for simultaneous dispersion compensation and Raman amplification is investigated by numerical simulation using the finite-difference simultaneous over-relaxation method. The proposed fiber was fabricated and experimental characterization results are presented. Figure 1 Raman gain, ␥, as a function of the pitch parameter, ⌳, for various d/⌳ values. The single star represents the C-band DC-PCF with physical parameters d/⌳ ϭ 0.89 and ⌳ ϭ 0.93 m.ABSTRACT: Refraction of obliquely incident plane waves due to the interface of a vacuous half-space and a half-space occupied by a simply moving, nondissipative, isotropic dielectric-magnetic medium is considered, when the medium's velocity lies parallel to the interface and in the plane of incidence. Counterposition of the refracted wave vector and time-averaged Poynting vector occurs when the medium's velocity is sufficiently large in magnitude and makes an obtuse angle with the incident wave vector. The counterposition induced by relative motion occurs whether the refraction is negative or positive when the medium is at rest.

Requirements for Efficient Raman Amplification and Dispersion Compensation Using Microstructured Optical Fibers

“…Regarding those uniform geometries in which hole and pitch remain constant across the fiber cross section, the literature investigating simultaneous Raman amplification and dispersion compensation in the same MOF is limited and a complete experimental demonstration is still to be carried out. Although we have obtained some encouraging experimental results, the measured performance [18,19] is well below our theoretical predictions [20] due to issues related mainly to geometry control and excess background loss. Therefore, in the present work we carry out an in-depth theoretical investigation on the design and performance limitations of uniform geometries microstructured optical fibers for Raman amplification and dispersion compensation.…”

Gratings in Structured Optical Fibres

“…By adjusting the crystal lattice parameters of a photonic crystal fibre appropriately, unique composite system properties can be displayed. A good example is the demonstration of dual dispersion compensation and Raman amplification [71].…”

Properties of Specialist Fibres and Bragg Gratings for Optical Fiber Sensors

“…The ability to tailor the hole distribution in general allows an incomparable flexibility in fibre design and in parameter control, not just of temperature and strain but of many others. For example, by adjusting the crystal lattice parameters of a photonic crystal fibre appropriately, unique composite system properties providing multiple functions, such as dual dispersion compensation and Raman amplification [21], are possible. By controlling the hole distribution and size, mechanical (including acoustic and pressure response) properties are altered as well as even more basic properties such as strain optic coefficient.…”