The rise in the number of internet connections, be it humans or machines, has led to demand for higher capacity and datarates on an individual level. This is further enhanced by the introduction of data-hungry applications that include augmented reality (AR), virtual reality (VR), artificial intelligence (AI), the Internet of Things (IoT), telemedicine and many more. With the ongoing increase in capacity demands from fixed-line and wireless networks, there is a drive to converge the vast bandwidth provided by optical access networks with the mobility provided by the wireless access networks to enable a range of multi-gigabit services to the end-users. Particular focus is paid to communication technologies, such as optical heterodyning and analog-radio-over fiber (ARoF), that support optical-wireless integration in a spectrally efficient and cost effective manner. Moreover, components and technologies in support of converged networks are deployed to enable high-capacity advanced modulation schemes and the use of very high frequency radio-frequency (RF) carriers. The photonic integrated circuits (PIC) will play a key role in the development of economic links as many transmitters and modulators can be integrated on a single chip. In this work I present a novel, integrable, ultra-flexible and low noise optical source that can be employed to provide millimeter wave (mmWave) frequency transmission systems for high throughput applications in combination with advanced detection techniques. The wavelength flexibility feature of this optical source permits the best use of available fiber in a reconfigurable network environment while the ability to vary the RF carrier frequencies can allow different RF standards to be used, enabling future network upgrades to higher carrier frequencies in the THz range. This work also demonstrates a true optical-wireless multi-service convergence by pairing the ultra flexible silicon photonics (SiP) based sources with an optical switch fabric; enabling the dynamic provisioning of broadband, RoF and mmWave signals solely in the optical domain. Finally, for datacenter interconnects, the utilization of low noise optical transmitters to handle multi-level signaling, like PAM-N formats, is vital. The low noise optical source is deployed to provide high bandwidth intra-datacenter interconnect capability. Through these system demonstrations, this work highlights a platform to facilitate the flexible transmission of various service types throughout a fully converged optical network.