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Optical switching and power control in LiNbO3 coupled waveguide arrays

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2 Author(s)
Kaplan, A. ; Dept. of Electr. Eng.-Phys. Electron., Tel-Aviv Univ., Ramat-Aviv, Israel ; Ruschin, S.

A diversity of switching and power-distribution functions in coupled multi-waveguide arrays is discussed and demonstrated. Functionality is achieved by varying the effective index in each waveguide independently by means of the electro-optic effect. The splitting and switching functions are attained by the use of a multi-variable optimization procedure. Specifically we demonstrate [1×2] and [1×5] routing and power division and [2×2] cross-connection. Polarization diversity and polarization-independent switching are attained using a special crystal orientation and electrode configuration. Single-polarization routing was measured in most cases, with crosstalk figures of the order of - 15 dB. Polarization-independent switching was achieved with crosstalk of less than - 19 dB for a three-waveguide [1× ] switch. By addition of dummy guides, a polarization-independent [2×2] cross-connection function could be attained with crosstalk figures better than -30 dB

Published in:

Quantum Electronics, IEEE Journal of  (Volume:37 ,  Issue: 12 )

Date of Publication:

Dec 2001

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