RF frequency down-conversion with quadratic electro-optic effect | IEEE Conference Publication | IEEE Xplore

RF frequency down-conversion with quadratic electro-optic effect


Abstract:

The frequency down-converter is an essential element of a photonic radar frontend. In this paper we describe a new photonic frequency down-conversion approach employing a...Show More

Abstract:

The frequency down-converter is an essential element of a photonic radar frontend. In this paper we describe a new photonic frequency down-conversion approach employing a quadratic optical phase modulator. When paired with an OPLL linear phase demodulator, this approach can potentially achieve a large dynamic range and a low conversion loss. A preliminary experiment has been performed to verify frequency down-conversion with an InP MQW optical phase modulator. It has been found that the unwanted 4th order electro-optic effect that exists in phase modulator results in spurious distortion for the down-converted RF signal. The techniques for mitigation are discussed.
Date of Conference: 07-12 June 2009
Date Added to IEEE Xplore: 17 July 2009
ISBN Information:
Print ISSN: 0149-645X
Conference Location: Boston, MA, USA

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