| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for generating a millimetre-wave carrier signal for optical data transmission. <P>SOLUTION: The apparatus includes stimulated Brillouin scattering source that generates a variable stoke line multi-wavelength optical signal, optical amplifiers, an optical splitter circuit that splits the amplified output of the SBS source circuit into two identical optical signals of the same amplitude, frequency, phase and electromagnetic mode, identical optical tuneable band-pass filters with the same band-pass, an optical coupler circuit that combines the optical signals emitted from the output of the optical filters such that the output of the coupler circuit is a dual wavelength optical signal with a wavelength separation equivalent to the desired millimetre wave frequency, a photo-detector circuit that converts the optical signal to an electrical signal by a heterodyning process, and a controller circuit that controls the gain of the optical amplifiers, the tuning of the optical band-pass filters independently and the number of stoke lines produced by the stimulated Brillouin scattering source circuit depending on the electrical millimetre wave output. <P>COPYRIGHT: (C)2012,JPO&INPIT |
