Optical similaritons in a tapered graded-index nonlinear-fiber amplifier with an external source
- Department of Electronics and Communication Engineering, Temple City Institute of Technology and Engineering, Bhubaneswar 752 057 (India)
We analytically explore a wide class of optical similariton solutions to the nonlinear Schroedinger equation appropriately modified to model beam propagation in a tapered, graded-index nonlinear-fiber amplifier with an external source. Under certain physical conditions, we reduce the coupled nonlinear Schroedinger equations to a single-wave equation that aptly describes similariton propagation through asymmetric twin-core fiber amplifiers. The asymmetric twin-core fiber is composed of two adjoining, closely spaced, single-mode fibers in which the active one is a tapered, graded-index nonlinear-fiber and the passive one is a step-index fiber. We obtain these self-similar waves for different choices of tapered index profile, using a Moebius transformation. Our procedure is applicable for both self-focusing and self-defocusing nonlinearities.
- OSTI ID:
- 22072173
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Controllable pulse width of bright similaritons in a tapered graded index diffraction decreasing waveguide
Nonautonomous spatiotemporal localized structures in the inhomogeneous optical fibers: Interaction and control