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A dielectric subwavelength Luneburg lens structure was designed using Hamiltonian ray tracing, and fabricated using electron beam lithography. Analysis from Hamiltonian ray tracing was in agreement with finite difference in time domain (FDTD) method with wavefront error between the two methods below λ/8, while an improvement in speed of approximately 100 times was observed. The fabricated Luneburg...
This paper describes the development of a low return loss mechanical splice type field installable connector while maintaining good ease of installation and performance.
Recently, coherent optical OFDM (CO-OFDM) has been proposed in optical network to increase the transmission distance with combating chromatic dispersion. CO-OFDM system has been successfully processed and recovered for transmitted signals without chromatic dispersion compensation. However, in optical links, the available optical power is limited due to safety and power consumption. Therefore, in this...
Recent progress in quantum key distribution (QKD) network technologies including an optically switched multi-user QKD network and activities for QKD performance improvements are presented.
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