Yuma Kawamoto, Toki Yoshioka, Norihiko Shibata, D. Headland, Masayuki Fujita, Ryo Koma, Ryo Igarashi, K. Hara, J. Kani, T. Nagatsuma
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300-GHz-band diplexer for frequency-division multiplexed wireless communication
SUMMARY We propose a novel silicon diplexer integrated with filters for frequency-division multiplexing in the 300-GHz band. The diplexer consists of a directional coupler formed of unclad silicon wires, a photonic bandgap-based low-pass filter, and a high-pass filter based on frequency-dependent bending loss. These integrated filters are capable of suppressing crosstalk and providing >15 dB isolation over 40 GHz, which is highly beneficial for terahertz-range wireless communications applications. We have used this diplexer in a simultaneous error-free wireless transmission of 300-GHz and 335-GHz channels at the aggregate data rate of 36 Gbit/s.
期刊介绍：
Currently, the IEICE has ten sections nationwide. Each section operates under the leadership of a section chief, four section secretaries and about 20 section councilors. Sections host lecture meetings, seminars and industrial tours, and carry out other activities.
Topics:
Integrated Circuits, Semiconductor Materials and Devices, Quantum Electronics, Opto-Electronics, Superconductive Electronics, Electronic Displays, Microwave and Millimeter Wave Technologies, Vacuum and Beam Technologies, Recording and Memory Technologies, Electromagnetic Theory.
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