Generating electronic carrier signals in the optical domain

Details Generating electronic carrier signals in the optical domain Generating electronic carrier signals in the optical domain

2005-08-16

2005-08-16

Harvey, Min Sun (Department: 2828)

Coherent light generators

Superradiant laser

C372S092000, C372S102000, C372S105000, C372S106000

Reexamination Certificate

active

06931031

ABSTRACT:
A dual wavelength optical fiber distributed feedback laser comprises a pump laser coupled to a birefringent fiber in which a first grating device (two co-located single phase-shift fiber Bragg gratings (FBGs)) is provided. The grating device gives the laser two potential lasing modes in each of two orthogonal polarization states. A polarization mode coupling FBG selects two orthogonally polarized modes on which the laser oscillates. In a photonic data carrying signal source, the laser is coupled to a polarization dependent, optical modulator operable to apply a modulation, at a data signal frequency, to one polarization mode of the laser output. In an optical waveguide based electronic signal transmission system the modulated and un-modulated polarization modes output from the source are transmitted across a fiber transmission line to a polarizing optical fiber in which the two modes heterodyne to generate an electronic carrier signal in the optical domain.

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