Directly modulated semiconductor-laser-fed photonic delay line with ferroelectric liquid crystals
Abbreviated Journal Title
PHASED-ARRAY ANTENNAS; TIME DELAYS; SYSTEM; DESIGN; FEED; Optics
A 3-bit binary photonic delay line is demonstrated at 1 GHz by use of a directly modulated semiconductor laser and remote interconnection fiber optics. Three types of free-space delay-bit geometries are tested far 5.69-ns, 1.67-ns, and 8.8-ps designed delay bits. This is the first time, to our knowledge, that a photonic delay line is demonstrated with ferroelectric liquid-crystal optical ON-OFF devices for optical path switching and active polarization noise filtering. Three-dimensional imaging optics and antireflection-coated optics (for all but five components) are used successfully to minimize photonic delay-line insertion losses and interchannel cross talk. The 3-bit system is fully characterized for measured and designed performance. (C) 1998 Optical Society of America.
"Directly modulated semiconductor-laser-fed photonic delay line with ferroelectric liquid crystals" (1998). Faculty Bibliography 1990s. 2346.