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In this paper, we propose an adaptive software-defined optical sensor network (SDOSN) architecture that is capable to host programmable sensors ranging from several thousands to several millions. Sensing process is of low cost, but highly accurate and capable of closely approaching the optical channel capacity. The proposed SDOSN architecture is interoperable with existing optical networks infrastructure...
The Spectrophotometer is a common and standard instrument used in a variety of experiments, such as determining the solutes concentration based on the Beer Lambert law. In this work, an integrated light emitting diode (LED) is proposed as the light source to preliminarily measure the concentration of the analyte whose compositions have been ascertained. The LED can be replaced simply, according to...
Commercial values of the relevant optical products are very potential in the future because more and more applications are successfully used in many fields. Currently, there several solutions are developing in Advanced Semiconductor Engineering of Chungli and Kaohsiung (ASE CL and KH), especially concentrating on the optical sensor and transceiver. Regarding the optical sensor transceiver, the edge-emitting...
A compact QCL-based open-path NO sensor is developed at 5.26 μm for high sensitivity and fast response. Combined with existing NH3 and N2O sensors, this system measures primary emissions of reactive nitrogen to the atmosphere.
We describe an algorithm to determine the optimum signal constellation in MMSE-sense for channel capacity achieving source distribution, and demonstrate that the signal constellations obtained by this algorithm outperform conventional QAM constellations (∼1 dB for 16-ary constellation at BER of 10−8).
This paper proposes an integrated sensor network architecture with optical and wireless links, named iSNOW. iSNOW optimally integrates optical and wireless links through cross-link optimization including an intelligent routing protocol. iSNOW improves system performance.
For the first time, we demonstrate a novel scheme to deliver 112Gbps PolMux-RZ-QPSK baseband and 10Gbps optical wireless signals at 60GHz millimeter-wave in downstream links and 10Gbps centralized lightwave upstream for the super-broadband radio-over-fiber 100GHz spaced WDM-PON networks.
We designed and built a novel all-optical re-timing, re-amplifying, and re-shaping (3R) regeneration system based on terahertz optical asymmetric demultiplexers (TOADs) developed in our laboratory. The system is capable of parallel processing multiple wavelengths, a feature which will significantly improve the scalability of current wavelength division multiplexing (WDM) networks. Performance against...
Todaypsilas access network is migrating towards broadband IP, fixed/mobile convergence and service convergence. Thus, the next generation access network (NGAN) requires a converged optical/wireless access network infrastructure, other than the existing architecture that connect to the cellular, broadband wireless, and optical access networks separately, which complicate the network and increase the...
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