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  4. SYNGRAT, an electrooptically controlled tunable filter with a synthesized grating structure
 
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1995
Journal Article
Title

SYNGRAT, an electrooptically controlled tunable filter with a synthesized grating structure

Abstract
A new design for a single-stage filter, called synthesized grating structure (SYNGRAT), is presented and investigated theoretically. It is shown that, even for weak electrooptical effects, the tuning range can be as high as 450 channels for a channel separation of 1 nm. The electrooptically synthesized grating structure gives full control of the filter characteristics in terms of channel separation, side-lobe suppression and coupling efficiency over a very large tuning range. Efficient side-lobe suppression can be used to reduce the crosstalk. This concept gives new freedom of functionality and flexibility.
Author(s)
Nolting, H.-P.
Gravert, M.
Journal
Optical and Quantum Electronics  
DOI
10.1007/BF00558481
Language
English
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut HHI  
Keyword(s)
  • diffraction gratings

  • electro-optical filters

  • optical communication equipment

  • optical crosstalk

  • optical design techniques

  • tuning

  • syngrat

  • electrooptically controlled tunable filter

  • synthesized grating structure

  • single-stage filter

  • weak electrooptical effects

  • tuning range

  • channel separation

  • full control

  • filter characteristics

  • coupling efficienc

  • very large tuning range

  • efficient side-lobe suppression

  • crosstalk

  • functionality

  • flexibility

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