Abstract

A single drive Mach-Zehnder optical modulator with a new simple planar structure was investigated by utilising a lateral electric field. To obtain the Pockels effect induced by the lateral electric field, a (110)-oriented InP substrate is introduced. The device exhibits an extinction ratio of > 25 dB over the entire C-band, a wide operating wavelength bandwidth of 80 nm and temperature insensitivity.

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