Title :
An optical filter based on carrier nonlinearities for optical RF channelizing and spectrum analysis
Author :
Burger, J.P. ; Steier, W.H. ; Dubovitsky, S. ; Tishinin, D. ; Uppal, K. ; Dapkus, P.D.
Author_Institution :
Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We experimentally demonstrate filtering based on the finite time response of the interband carrier nonlinearities in a direct bandgap semiconductor. The filter is implemented in a mixed strain polarization insensitive multiple-quantum-well, broad-area semiconductor amplifier. The key to the filter implementation is the separation of a four-wave mixing generated sideband from the linearly amplified inputs based on spatial filtering. Both spectrum analysis and channelizing of RF modulated optical carriers are demonstrated.
Keywords :
diffraction gratings; microwave photonics; multiwave mixing; optical Kerr effect; optical waveguide filters; quantum well lasers; ridge waveguides; semiconductor optical amplifiers; spatial filters; spectral analysis; waveguide lasers; RF modulated optical carriers; broad-area semiconductor amplifier; carrier nonlinearities; channelizing; direct bandgap semiconductor; filter; filter implementation; filtering; finite time response; four-wave mixing generated sidebands; interband carrier nonlinearities; linearly amplified inputs; mixed strain polarization insensitive multiple-quantum-well; mixed strain polarization insensitive multiple-quantum-well broad-area semiconductor amplifier; optical RF channelizing; optical filter; spatial filtering; spectrum analysis; Filtering; Nonlinear optics; Optical filters; Optical mixing; Optical modulation; Photonic band gap; Radio frequency; Semiconductor optical amplifiers; Stimulated emission; Time factors;
Journal_Title :
Photonics Technology Letters, IEEE
