Bandpass switching based on a nonlinear optical loop mirror and an in-fibre grating reflector

P.N. Kean, D.A. Pattison, W. Forysiak, I. Bennion, N.J. Doran

Research output: Chapter in Book/Published conference outputConference publication


Nonlinear optical loop mirror (NOLM) requires breaking the loop symmetry to enable the counter propagating pulses to acquire a differential π phase shift. This is achieved with either an asymmetric fused fibre coupler at the input or by the inclusion of an asymmetrically located gain or loss element within the loop. By introducing a frequency selective loss element, nonlinear switching may be confined to a narrow band of wavelengths or multiple wavelengths. This configuration may have applications in time-wavelength demultiplexing. We demonstrate this technique of bandpass switching in the soliton regime using a fibre-Bragg grating reflector as the wavelength dependent loss.
Original languageEnglish
Title of host publicationConference on Lasers and Electro-Optics Europe - Technical Digest
Place of PublicationPiscataway, NJ (US)
Publication statusPublished - 1994
EventConference on Lasers and Electro-Optics Europe - Amsterdam, Netherlands
Duration: 28 Aug 19942 Sept 1994


ConferenceConference on Lasers and Electro-Optics Europe
Abbreviated titleCLEO Europe '94


  • fiber gratings
  • fiber nonlinear optics
  • mirrors
  • nonlinear optical devices
  • nonlinear optics
  • optical devices
  • optical fiber couplers
  • optical fiber polarization
  • optical pulses
  • space vector pulse width modulation


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