FIELD: modulation of optical signals.
SUBSTANCE: electro-absorption modulator has waveguide structure which contains many sections. Any section has different prohibited area and at least one electrode to be applied to section of optical shift. According to method, optical signal passing through waveguide structure is modulated by means of many sections made for separate addressing due to application of modulation signal to one or more sections and due to electrical shift of one or more sections by means of shift voltage. Specified level of single or more parameters, as depth of modulation and introduced losses, is provided.
EFFECT: widened range of operation; smaller sizes of device.
21 cl, 4 dwg
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