pai using wearable cameras," Int. J. Environ. Res. Public Health, vol. 16, no. 10, p. 1681, May 2019. The Role of Photonics for the Realization of Future 6G Communication Systems Kamal Kishor Choure, Manisha Prajapat, Ankur Saharia, Nitesh Mudgal, Manish Tiwari, Puspa Devi Pukhrambam, and Ghanshyam Singh CONTENTS Introduction 10.1.1 Key Features and Performance Indicators Enabling Technologies for 6G Communication Systems 10.2.1 Spectrum Techniques 10.2.2 Antenna Techniques 10.2.3 Physical Techniques 10.2.4 Air Interface Techniques 10.2.5 Network Design Techniques 10.2.6 Intelligent Networking Techniques Photonics for 6G Communication Systems 10.3.1 Photonics Components 10.3.2 Photonic Modulator 10.3.3 Optical Amplifier 10.3.4 Passive Optical Devices, Switches, and Multiplexers Conclusion References INTRODUCTION The domain of data communication has expanded immensely in the last decade with the introduction of new technologies in the hardware as well as the software part of the communication system. Worldwide mobile data traffic has been growing at an exponential rate for the past two decades [1, 2], and developments in the telecommunications industry will continue for many years. Since the evolution of communication technology, the demand for data flow has expanded substantially, and it is expected to surpass petabytes in the coming few years. Whereas the 5th gener- ation (5G) communication system is still in its early stages of implementation, it has DOI: 10.1201/9781003368311-10 5G Wireless Communication System in Healthcare Informatics a number of drawbacks, including high data traffic, latency, secured communication, power-efficient system, increased number of users, intelligent systems, and global coverage, against which researchers from all over the globe have already begun work on the 6th generation (6G) system, which will include a number of innovations and technologies that (5G) and its predecessor technologies lack [3, 4]. Researchers have documented the requirements and possible 6G architecture in [5,