Title :
All-optical switching in phase-shifted fiber Bragg grating
Author :
Melloni, A. ; Chinello, M. ; Martinelli, M.
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Abstract :
A low-power all-optical-switching in a phase-shifted grating has been experimentally demonstrated at 1.55 μm. The grating is written in a standard fiber for communication and the switching is based on the cross-phase modulation induced by an intense pump pulse on a low intensity probe. An extinction ratio of more than 6 dB has been achieved for 1 kW pulse peak power. The strong enhancement of the nonlinear effect due to the group velocity reduction and the switching polarization dependence have been theoretically investigated and experimentally confirmed.
Keywords :
Bragg gratings; nonlinear optics; optical fibre communication; optical modulation; optical pumping; optical switches; phase modulation; 1 kW; 1.55 mum; all-optical switching; cross-phase modulation; extinction ratio; group velocity reduction; intense pump pulse; kW pulse peak power; low intensity probe; low-power all-optical-switching; nonlinear effect; phase-shifted fiber Bragg grating; standard fiber; strong enhancement; switching polarization dependence; Communication switching; Extinction ratio; Fiber gratings; Fiber nonlinear optics; Nonlinear optical devices; Nonlinear optics; Optical fiber communication; Optical fiber polarization; Optical refraction; Probes;
Journal_Title :
Photonics Technology Letters, IEEE
