Sub-GHz Resolution Photonic Spectral Processor and Its System Applications

Roy Rudnick, Alexander Tolmachev, David Sinefeld, Ori Golani, Shalva Ben-Ezra, Moshe Nazarathy, Dan M. Marom

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A record performance metric waveguide grating router (WGR) design with a 200 GHz free spectral range (FSR) capable of resolving sub-GHz resolution spectral features is developed for a fine resolution photonic spectral processor (PSP). The WGR's FSR was designed to support subchannel add/drop from a superchannel of 1 Tb/s capacity. Due to fabrication imperfections, we introduce phase corrections to the light beams emerging from the 250 waveguides of the WGR output using a liquid crystal on silicon (LCoS) phase spatial light modulator (SLM) placed in an imaging configuration. A second LCoS SLM is located at the Fourier plane, for arbitrary spectral amplitude and phase manipulations. The PSP is utilized in multiple system transmission experiments, such as flexible spectral shaping and subcarrier drop demultiplexing with sub-GHz spectral resolution.

Original languageAmerican English
Article number7805173
Pages (from-to)2218-2226
Number of pages9
JournalJournal of Lightwave Technology
Issue number11
StatePublished - 1 Jun 2017

Bibliographical note

Publisher Copyright:
© 1983-2012 IEEE.


  • Optical communication
  • optical filters
  • optical planar waveguide components
  • optical waveguide components
  • wavelength division multiplexing


Dive into the research topics of 'Sub-GHz Resolution Photonic Spectral Processor and Its System Applications'. Together they form a unique fingerprint.

Cite this