High-dynamic-range hybrid analog–digital control broadband optical spectral processor using micromirror and acousto-optic devices

摘要

For the first time, to the best of our knowledge, the design and demonstration of a programmable spectralnfiltering processor is presented that simultaneously engages the power of an analog-mode optical device suchnas an acousto-optic tunable filter and a digital-mode optical device such as the digital micromirror device.nThe demonstrated processor allows a high 50 dB attenuation dynamic range across the chosenn1530–1565 nm (u0001C band). The hybrid analog–digital spectral control mechanism enables the processor tonoperate with greater versatility when compared to analog- or digital-only processor designs. Such a proces-nsor can be useful both as a test instrument in biomedical applications and as an equalizer in fiber commu-nnication networks. © 2008 Optical Society of America