Photonic Radio Frequency Orbital Angular Momentum Generation and Beam Steering
Orbital angular momentum (OAM) is a fundamental property of electromagnetic waves and is inherently carried by all frequencies of waves. In particular, OAM applications at radio frequencies (RFs) h…
A Future Proof Reconfigurable Wireless and Fixed Converged Optical Fronthaul …
Broadband access services in the era of 5G and beyond are driving the evolution of optical access networks from a fiber-to-the-home/ fiber-to-the-building infrastructure to a more common access pla…
DAS Over 1,007-km Hybrid Link With 10-Tb/s DP-16QAM Co-Propagation Using Freq…
We report the first distributed acoustic sensing (DAS) experiment with over >1,000 km reach on a hybrid link comprising of a mixture of field and lab fibers with bi-directional inline Raman amplifi…
High-Power and High-Speed Ge/Si Traveling-Wave Photodetector Optimized by Gen…
We experimentally demonstrate a 4-stage and an 8-stage Ge/Si distributed traveling-wave photodetectors (TWPDs) with high RF output powers and large bandwidths. The genetic algorithm is utilized to …
Generating Loss Dependent Bifid Dips of Optical Carrier Based Microwave With …
A self-feedback anti-symmetric coupled fiber ring resonator (SACFRR) is proposed and demonstrated to generate the distinctive loss dependent bifid dips. The universal derivation of the ring resonat…
High Resolution Coherent Doppler Wind Lidar Incorporating Phase-Shift Keying
A coherent Doppler wind lidar (CDWL) with spatial/temporal resolution of meter and sub-second scale is reported. Phase-shift keying (PSK) is introduced into the pulse pair to enhance the measuremen…
No Magic for Market Entry in the Field : Evidence from Taxi Markets
We study taxi markets in Singapore to understand market entry in the field. Although market-entry games in the laboratory consistently produce equilibrium outcomes, we show that a lack of market kn…
Tunable Chaotic External-Cavity Semiconductor Laser With Time-Delay Signature…
A wavelength tunable chaotic external cavity semiconductor laser (ECSL) composed by a distributed-feedback laser diode (DFB-LD) and a broadband chirped fiber Bragg grating (CFBG), is proposed and e…
Broadband Manipulation of Stokes Raman Frequency Combs Via Mode Division Mult…
We theoretically and experimentally investigate broadband manipulation of Stokes frequency comb generation in a silica microbottle resonator. We realize selective excitation of spectrally trapped S…
Spatial Resolution Enhancement of Coherent Doppler Lidar by Pseudo-Random Pha…
A high spatial resolution coherent Doppler wind lidar (CDWL) incorporating pseudo-random phase coding (PRPC) is proposed and demonstrated. Random phase coding of the transmitted lightwave spreads t…
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