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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.
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