Accession Number : ADP008151

Title :   Sideband Formation in Soliton Lasers and Transmission,

Corporate Author : STRATHCLYDE UNIV GLASGOW (UNITED KINGDOM)

Personal Author(s) : Smith, N. J. ; Blow, K. J. ; Andonovic, I.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : Both optical communication systems and erbium doped fibre lasers have been developed in which the pulses are thought of as being solitons. The propagation is insensitive to periodic changes in the pulse energy occuring on length scales, Z sub a, short compared with the soliton period, Z sub o, as formalised in the Average Soliton Model. Such energy variations are caused by the lumped amplifiers in transmission schemes, or output couplers in a fibre laser cavity. Mode locking processes in fibre lasers can force operation into regimes where the cavity length (and hence energy variations) are comparable to the soliton period. In this situation sidebands have been observed in the output spectrum. To explain these sidebands, we describe the mechanism as a two stage process. The energy perturbations cause dispersive wave radiation to be emitted from the pulse over a broad band of frequencies. A phase matching process then selects individual wavelengths which grow into sidebands,

Descriptors :   *SIDEBANDS, *OPTICAL PUMPING, *FIBER OPTICS, *SYMPOSIA, AMPLIFIERS, COUPLERS, ERBIUM, FREQUENCY, LASER CAVITIES, LASERS, OPTICAL COMMUNICATIONS, OUTPUT, PERTURBATIONS, PHASE, PROPAGATION, PULSES, RADIATION, SOLITONS, BROADBAND, GREAT BRITAIN.

Subject Categories : Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE