The demand of large data bandwidth for global mobile internet data traffic is increasing day by day. The telecom operators all over the world start to deploy 4G networks. To release the wireless networks congestion, the WiFi networks are widely adopted by operators for data offloading. Therefore, the future wireless networks are multi-service networks which allow multiple systems coexisting to provide multiple network access for users. In this paper, TDD(Time-division Duplex) RoF(Radio over Fiber) system is implemented for 2x2 MIMO (Multi-input Multi-output) system. The CWDM (Coarse Wavelength Division Multiplexing) is applied to delivery the downlink and uplink signals of 2x2 MIMO (i.e. 4 different signals) in single fiber simultaneously and reduce the required fibers of RoF system. For TDD-RoF system, the transceiver control technique is reconfigured to offer the different TDD system, e.g. TD-LTE (Time-division Long-Term Evolution), WiMAX, WiFi etc. Although the CWDM can be used to develop multi-service RoF system, e.g. 4 wavelengths for TD-LTE, 4 wavelengths for WiMAX, 4 wavelengths for WiFi, it requires multiple laser sources for each downlink and uplink path and vastly increases the cost of RoF systems. To reduce the cost of multi-service RoF systems, an optical frequency comb based RoF systems is further proposed.