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Y-branch optical modulator

Publication Type:

Conference Paper

Authors:

Jaeger, N.A.F.; Lai, W.C.

Source:

Proc. SPIE - Int. Soc. Opt. Eng. (USA), Volume 1583, Boston, MA, USA, p.202-9 (1991)

ISBN:

0277-786X

Keywords:

electro-optical devices; integrated optics; lithium compounds; titanium

Abstract:

To characterize z-cut Ti:LiNbO3 Y-branch optical modulators, numerical simulations were performed showing that high on/off ratios are attainable without special Y-junction asymmetries or long electrodes. The effective index and 2D finite difference beam propagation methods were used for the simulations. A modulator with a 2? Y-branch was fabricated. The measured on/off ratios were 5:1 at 25 V, 12:1 at 50 V, and 60:1 at 75 V, corresponding to 4:1, 12:1, and 62:1 for the simulations for ?0=632.8 nm

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