The present invention relates to an optical modulator that generates quaternary amplitude
modulated light without inter-symbol-interference by splitting input light into three optical …

The present invention provides a cost-saving and space-saving optical modulator enabling
application of modulation signals with high phase difference accuracy without using a …

The present invention relates to an optical modulating device with frequency multiplying
technique for electrical signals, which primary comprises a mixer, which generates a mixed …

An optical modulator comprises an optical waveguide provided on an electro-optic substrate
and formed of a first region for optical phase modulation and a second region for optical …

When an intensity modulating operation and a phase modulating operation are carried out
by employing a 2-electrode MachZehnder type optical modulator preferably a LN-MZ type …

A modulating optical element having ports wherein either port can output or receive light
signals. An electrooptic effect is applied to the optical element to allow the light signals to …

Disclosed is an optical modulator which substantially lowers loss and has little attenuation in
the intensity of an optical signal after modulation. The optical modulator includes a 1× 2 RZ …

An optical modulation device comprises an optical modulator in which the operating point is
varied according to a bias voltage. A phase deviation of an operating point from a selected …

The present invention has an object to provide a Mach Zehnder optical modulator for
achieving the reduction of wavelength chirping caused in a modulated light. To this end …

The specification describes an optical modulator implemented with an MSK format. The
modulator creates two separate pulse streams (one pulse stream comprising the odd bits …