Photonic Technologies for Terahertz Wireless Communication Systems

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Wireless communication systems are an integral part of modern society. On a national scale, the wireless industry contributes $23.5 billion to the gross domestic product, $2.7 billion in investments, and 134,100 jobs. On an international scale, the wireless industry generates nearly 4% of the global gross domestic product, with $3.8 trillion in contributions spanning 236 countries. However, there is a looming challenge for the existing wireless technologies. Contemporary wireless systems have relied upon radio-frequency technology, with carrier frequencies spanning 3 kHz to 300 GHz, but the demand for radio-frequency systems has doubled every 18 months. We are now witnessing capacity limitations due to the limited number of licensed radio-frequency bands. Spectrum scarcity is a serious concern for the industry.