Patent ID: 7388703
Filing Date: 2008-06-17
Classification: G02F,H04B

Abstract:
1. An optical transmission device comprising: an optical phase modulator for modulating a phase of an optical signal modulated by an intensity of a transmission signal; and a signal conversion circuit for providing a control signal to the optical phase modulator, so that when a state of the optical signal shifts from a first luminescent state, through one non-luminescent state, to a second luminescent state, the phase of the optical signal in the first luminescent state and the phase of the optical signal in the second luminescent state are inverted with respect to each other, or so that when a state of the optical signal shifts from the first luminescent state, through two or more non-luminescent states, to a third luminescent state, the phase of the optical signal in the first luminescent state and the phase of the optical signal in the third luminescent state are inverted with respect to each other.