This thesis conducted a deeply theoretical analysis and derivation of the polarization, initial phase offset, intensity offset, and the relative intensity noise of two dresses 1std lasers. And the results of the derivation are simulated. At the same time, this thesis calculated the formula of the phase noise and the line width of two lasers. The dispersion factor of fiber should be considered if we use this system in ROF communication.In order to compress the noises of the ralph lauren polo shirts system, this thesis made some improvements. It used balanced detection for“optical generation of microwaves”, and used optical injection locking. Balanced detection can reduce the noise of the Lacoste Shirts system, and optical injection can reduce the frequency offset. This thesis had established the noise mode of the system, analyzed and calculated the formula of the system’s signal to noise ratio (polo shirts). The chi hair straightener result verified balanced detection can improve SNR of communication system. Optical injection locking will cause the salver laser to lock onto the master’s sideband frequency and to resonate there. This thesis had analyzed the theory of OIL, and used software to simulate it. The result of simulation established that the characteristic of microwaves (millimeter waves) generated by optical injection locking is better. At last, we combined optical injection locking and balanced detection together, and simulated the system.
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