Integrated Kerr shutter and fiber laser optical modulation

Details Integrated Kerr shutter and fiber laser optical modulation Integrated Kerr shutter and fiber laser optical modulation

1991-04-25

1992-05-05

Moskowitz, Nelson

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359239, 359258, 385 1, 385 11, 369110, G02B 626, H01S 310

Patent

active

051113260

ABSTRACT:
An optical modulation source provides a pulsed optical signal 44 by coupling a pulsed optical pump signal 13 polarized along one axis of a polarization preserving fiber 24 having a wavelength .lambda.p and a continuous-wave (CW) probe signal 54 polarized partially along the pump polarization axis having the desired output wavelength .lambda.s provided by a laser 52, into one end 22 of a polarization preserving fiber 24. The pump signal is decoupled at the output end 26 of the fiber 24 and used to drive the laser 52 which provides the CW probe signal 54. The pulsed pump signal 13, when present, changes the polarization of the probe signal 54 by the optical Kerr effect. The probe signal is decoupled at the output end 26 of the fiber 24 and passed through an analyzer 38 yielding an output probe signal 44 which exists only when the pump signal is present (or alternatively, when absent), thereby providing a probe signal 44 having a wavelength .lambda.s of the probe signal and a pulse rate (1/T) of the pump signal.

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