The performance of millimeter-wave over fiber using electro absorption modulator and avalenche photodiode

In this paper, a parallel MZM and a quadrupling frequency technique are used to produce a 72 GHz mm-wave. The determined optical sideband suppression ratio (OSSR) is 71 decibels. This mm-wave signal's performance is compared to that of two optical modulators, the Mach Zehnder Modulator (MZM) and the Electro Absorption Modulator (EAM) as well as two different kinds of photodiodes, the Avalanche Photodiode (APD) and the PIN-PD. When using the EAM modulator, the maximum Q factor for 80 km is almost 20, but when using MZM, it is only 2.3. The performance of the generated mm-wave was then investigated using two different types of PD, PIN and APD, as optical receivers to achieve the best result in terms of signal quality. When compared to PIN-PD, APD improves the power of the received 72 GHz signal by 35%. The system's ability to carry a higher data rate is tested by successfully varying the bit rate up to 10 Gb/s over a distance of 20 km.