Patent ID: 8301034
Filing Date: 2012-10-30
Classification: H04B

Abstract:
1. An optical modulation device, comprising: an electric signal generator generating an electric signal carrying a data signal; a first sinusoidal signal generator generating a first sinusoidal signal; an optical signal generator generating an input source optical signal; and an optoelectronic modulator receiving said input source optical signal, said electric signal and said first sinusoidal signal, biased to modify a transmission performance of said input source optical signal, modulating said input source optical signal with said electric signal and said first sinusoidal signal, and then sending out an output source optical signal carrying said electric signal and said first sinusoidal signal; wherein said output source optical signal, which is formed via modulating said input source optical signal with said electric signal and said first sinusoidal signal, includes: a right-side electric signal and a left-side electric signal symmetric to said right-side electric signal; a right-side first sinusoidal signal and a left-side first sinusoidal signal symmetric to said right-side first sinusoidal signal; and a symmetric center thereof is a frequency of an optical carrier of said output source optical signal; an optical filter receives said output source optical signal and filters out said right-side first sinusoidal signal and said left-side electric signal or filters out said right-side electric signal and said left-side first sinusoidal signal, whereby the filtered out signal is transmitted to a user via a Reflective Semiconductor Optical Amplifier (RSOA).