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Synthesis of multiple-ring-resonator filters for optical systems

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4 Author(s)
Orta, R. ; Dipartimento di Elettronica, Politecnico di Torino, Italy ; Savi, P. ; Tascone, R. ; Trinchero, D.

A method for the synthesis of optical filters consisting of a cascade of N-coupled rings is presented. The procedure is based on the definition of a polynomial whose roots are the zeros of the channel-dropping transmittance characteristic and provides directly the ring electrical lengths and the mutual coupling coefficients. A design example of a Chebyshev-type 6-ring bandpass filter is presented.

Published in:

Photonics Technology Letters, IEEE  (Volume:7 ,  Issue: 12 )