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We report the design, fabrication and characterization of tensile‐strained GaInP quantum‐well single‐emitter 638‐nm lasers for RGB laser projection. P‐side‐down submounted multimode lasers with 105μm stripe width produce 2.14 W and 1.73 W at environmental temperature of 20 and 40 Celsius, respectively, limited by the catastrophic optical damage on front facet. Efficiency reaches 37.7% at room temperature...
Blackouts of electric power often result in huge economic losses to power grid enterprises and society. To indicate the losses of accidents, this paper introduces the concept of the accident cost of distribution network failure, analyzes the various factors affecting it and figures out the calculation formula of it. On the basis of fuzzy theory, we use weight of power failure influence to describe...
Aimed at reliable communications in industrial wireless technology, this paper first introduces the current major wireless protocol, and challenging industrial environment, second addresses a distributed cooperative wireless sensor networks together with dynamic spectrum management scheme based on hybrid spread spectrum scheme. Finally through the theoretical analysis and evaluation, it is proved...
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