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17 May 2010 RF frequency transparent 90° hybrid based on silicon on insulator photonic circuit
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Abstract
A simple configuration for achieving a radio frequency transparent 90° hybrid, for broadband QAM wireless systems using silicon photonics is proposed. The device consists of a high Q ring resonator which induces an optical 90° phase shift between two adjacent resonant wavelengths. When these optical carriers are modulated by an RF carrier the resulting device behaves as an RF 90° hybrid. Numerical simulations of the phase shift were performed on a 40 GHz carrier, and to demonstrate the frequency transparency phase shift simulations was also performed at a carrier frequency of 60 GHz. One of the main applications of such a device is the generation of millimeter wave 10 Gb/s wireless based on quadrature amplitude modulation.
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Rakesh Sambaraju, Jose Vicente Galan-Conejos, Javier Herrera, Amadeu Griol, Claudio Otón, Pablo Sanchis, and Alejandro Martínez "RF frequency transparent 90° hybrid based on silicon on insulator photonic circuit", Proc. SPIE 7719, Silicon Photonics and Photonic Integrated Circuits II, 771914 (17 May 2010); https://doi.org/10.1117/12.854531
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