paper 150204224432

We study a terahertz-wave integrated circuits based on a two-dimensional photonic crystal (PC) slab to manipulate terahertz waves with low loss. We demonstrate a PC waveguide with a low propagation loss (< 0.2 dB/cm). Based on this PC waveguide, we develop a diplexer using a directional coupler whose short length is comparable to the wavelength. We also fabricate a grating coupler as an interface of the waveguide to free space. Finally, the integration of terahertz diode chips into the waveguide is discussed. The propagation frequency band of the PC waveguide is successfully observed from the integrated device that uses a diode as a terahertz detector. We also achieve a 7.5-Gbit/s error-free terahertz-wave transmission using the device in the 0.3-THz band.

Citation

Tadao Nagatsuma, Masayuki Fujita, Toshikazu Mukai, Asako Suminokura, Kazuisao Tsuruda, and Masahiro Yata, "Terahertz-wave Integrated Circuits Based on Photonic Crystals," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)2254-2259

References

Download Full Article (PDF ) Wire media illustration