@article {15135,
	title = {Sub-GHz Resolution Photonic Spectral Processor andits System Applications},
	journal = {Journal of Lightwave Technology},
	volume = {35},
	year = {2017},
	pages = {2218-2226},
	abstract = {A record performance metric waveguide grating\&nbsp;router (WGR) design with a 200 GHz free spectral range (FSR)\&nbsp;capable of resolving sub-GHz resolution spectral features is developed\&nbsp;for a fine resolution photonic spectral processor (PSP). The\&nbsp;WGR{\textquoteright}s FSR was designed to support subchannel add/drop from\&nbsp;a superchannel of 1 Tb/s capacity. Due to fabrication imperfections,\&nbsp;we introduce phase corrections to the light beams emergingfrom the 250 waveguides of the WGR output using a liquid crystal\&nbsp;on silicon (LCoS) phase spatial light modulator (SLM) placed\&nbsp;in an imaging configuration. A second LCoS SLM is located at\&nbsp;the Fourier plane, for arbitrary spectral amplitude and phase manipulations.\&nbsp;The PSP is utilized in multiple system transmission\&nbsp;experiments, such as flexible spectral shaping and subcarrier drop\&nbsp;demultiplexing with sub-GHz spectral resolution.},
	author = {Roy Rudnick and Alexander Tolmachev and David Sinefeld and Ori Golani and Shalva Ben-Ezra and Moshe Nazarathy and Dan M. Marom}
}
