S. Yegnanarayanan et al., RECIRCULATING PHOTONIC FILTER - A WAVELENGTH-SELECTIVE TIME-DELAY FORPHASED-ARRAY ANTENNAS AND WAVELENGTH CODE-DIVISION MULTIPLE-ACCESS, Optics letters, 21(10), 1996, pp. 740-742
A novel wavelength-selective photonic time-delay filter is proposed an
d demonstrated. The device consists of an optical phased-array wavegui
de grating in a recirculating feedback configuration. It can function
as a true-time-delay generator for squint-free beam steering in optica
lly controlled phased-array antennas and as an encoding-decoding filte
r for wavelength code-division multiple access. (C) 1996 Optical Socie
ty of America