Linearized optical digital-to-analog modulator

A method for modulating an optical signal according to a digital data input word of N bits comprising:

• (a) processing the digital data input word to generate an electrode actuation vector of M values where M≧N;
• and
• (b) applying M voltage values corresponding to said actuation vector values to M actuating electrodes of an electrically controllable modulator for modulating the intensity of an optical signal,
• wherein at least one value of said actuation vector varies as a function of values of more than one bit of the input data word.

A modulator device for converting digital data into analog modulation of the power of an optical signal, the modulator device comprising:

• (a) an electronic input for receiving an input data word of N bits;
• (b) a semiconductor light generating device for generating an optical signal of variable intensity, said semiconductor light generating device including M actuating electrodes where M≧N;
• and
• (c) an electrode actuating device associated with said electronic input and said semiconductor light generating device, said electrode actuating device being responsive to the input data word to supply an actuating voltage to said actuating electrodes, thereby generating an output intensity corresponding substantially to said input data word,
• wherein said electrode actuating device actuates at least one of said actuating electrodes as a function of values of more than one bit of the input data word.