Stable millimeter wave source for broadband wireless signal transmission using optical fibre

A method for generating a millimeter wave signal for use in optical data transmission, the method comprising the steps of:

• i) generating a variable stoke line multi-wavelength optical signal (601);
• ii) controlling the number of stoke lines by way of an optoelectronic control circuit (602);
• iii) amplifying the variable stoke line multi-wavelength optical signal (603);
• iv) splitting the variable stoke line multi-wavelength optical signal into equal proportions (50:50), whereby the resultant signal are equal in terms of magnitude, phase, frequency and electromagnetic mode (604);
• v) filtering the optical signals that have been split using tuneable optical filters that are tuned to select the desired stoke line or optical signal of desired wavelength (605);
• vi) combining the output of the optical filters to produce an optical signal such that the frequency of the produced optical signal is an integer multiple of a numerical value of a frequency that lies in the Extra High Frequency (EHF) band of the electromagnetic spectrum (606);
• vii) amplifying and flattening the optical signal obtained in step (607);
• viii) heterodyning and hence converting the signal obtained in step to an electrical millimeter wave signal (608);
• and
• ix) stabilizing the electrical millimeter wave signal output (609).