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A new technique for generating negative coefficients in photonic signal processors based on dual-input and dual-output intensity modulator sagnac interferometers

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2 Author(s)
Chan, E.H.W. ; Sch. of Electr. & Inf. Eng., Univ. of Sydney, NSW ; Minasian, R.A.

New structures that can realize bias drift-free dual-input and dual-output intensity modulators, and which can generate negative coefficients in photonic signal processors, are presented. They are based on a Sagnac loop comprising a travelling-wave optical phase modulator, together with a routing structure that gives outputs with opposite radio-frequency phases. Results using the dual-input mode of operation demonstrate a new technique for generating negative coefficients in an all-optical microwave photonic filter

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 11 )