Spectral processor implemented with hybrid free-space and guided-wave optics and active LCOS modulator

David Sinefeld*, Dan M. Marom

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

We propose and demonstrate a broadband spectral phase and amplitude modulator for the C-band spectrum based on a hybrid free-space and guided-wave optics arrangement. A combination of Arrayed Waveguide Grating (AWG) with a Fourier lens disperses the signal in the lens' back focal plane. Modulation of the spectrum is subsequently performed with a spatial phase modulator working in reflection. In this work we report for the first time the use of Liquid Crystal on Silicon (LCoS) based phase modulator in the hybrid arrangement. Usage of this device enables phase control on a pixel-by-pixel basis. In this manner we can modulate the phase of every pixel by applying the suitable voltage on it. An amplitude modulation can also be achieved by applying a phase interference effect at the LCoS plane. The combination of spectral phase and amplitude modulation along the LCoS array enables numerous ways of signal manipulations.

Original languageAmerican English
Title of host publication2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Pages380-383
Number of pages4
DOIs
StatePublished - 2008
Event2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008 - Eilat, Israel
Duration: 3 Dec 20085 Dec 2008

Publication series

NameIEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

Conference

Conference2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Country/TerritoryIsrael
CityEilat
Period3/12/085/12/08

Keywords

  • Optical communication
  • Optical filters
  • Optical planar waveguide components
  • Optical waveguide components
  • Wavelength division multiplexing

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