Photonics, the science and technology of light, is undergoing a profound transformation, driving innovations that are critical for advancing optical communication networks. This perspective illuminates the key emerging frontiers poised to shape the future of global connectivity. We explore the convergence of integrated photonics, which miniaturizes optical systems onto chips for unprecedented performance and efficiency in transceivers and switches, and quantum photonics, which harnesses the fundamental quantum properties of light to revolutionize secure communications through quantum key distribution (QKD). We delve into the disruptive potential of metaphotonics, where engineered materials provide unparalleled control over light, enabling novel functionalities for spectral filtering, beam steering, and signal processing within network nodes. Furthermore, we examine the critical role of biophotonics in advancing distributed fiber sensor networks for the real-time monitoring of optical infrastructure health. Finally, we highlight the imperative of green photonics, which focuses on creating energy-efficient technologies essential for sustainable network operation. By synthesizing breakthroughs across these synergistic domains, this perspective offers a forward-looking vision of the challenges and immense opportunities for overcoming capacity and energy bottlenecks in future optical networks, charting a course for interdisciplinary collaboration and technological breakthroughs.
Alberto Boretti (Mon,) studied this question.
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