Optical modulators

Details Optical modulators Optical modulators

G - Physics

02

F

345/55

G02F 1/01 (2006.01)

Patent

CA 1129533

IMPROVEMENTS IN OPTICAL MODULATORS Abstract of the Disclosure An optical modulator has two closely spaced optical fibre end surfaces. The separation of the surfaces can be altered in response to an applied modulating signal. Light propagating towards the modulator along one fibre is partially reflected from the two fibre end surfaces, the two reflected beams interfering according to their phase difference. Alternatively, the modulator may be operated in a transmissive mode. To obtain modulation, one of the fibres is longitudinally vibrated. A method of operating a modulator in a wavelength selective mode is also described.

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