Abstract-Photonic-crystal diplexers for terahertz-wave applications

Masahiro Yata, Masayuki Fujita, and Tadao Nagatsuma
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-7-7835

A compact diplexer is designed using a silicon photonic-crystal directional coupler of length comparable to the incident wavelength. The diplexer theoretically and experimentally exhibits a cross state bandwidth as broad as 2% of the operation frequency, with over 40-dB isolation between the cross and bar ports. We also demonstrate 1.5-Gbit/s frequency-division communication in the 0.32- and 0.33-THz bands using a single-wavelength-sized diplexer, and discuss the transmission bandwidth. Our study demonstrates the potential for application of photonic crystals as terahertz-wave integration platforms.

© 2016 Optical Society of America

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