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Creators/Authors contains: "Zhang, Yuanhang"

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  1. ; ; ; ; ; (, Organic Letters)
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  2. ; ; ; ; ; ; ; ; (, Optics Express)
    Mode-group multiplexing (MGM) can increase the capacity of short-reach few-mode optical fiber communication links while avoiding complex digital signal processing. In this paper, we present the design and experimental demonstration of a novel mode-group demultiplexer (MG DeMux) using Fabry-Perot (FP) thin-film filters (TFFs). The MG DeMux supports low-crosstalk mode-group demultiplexing, with degeneracies commensurate with those of graded-index (GRIN) multimode fibers. We experimentally demonstrate this functionality by using a commercial six-cavity TFF that was intended for 100 GHz channel spaced wavelength-division multiplexing (WDM) system. 
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  3. ; ; ; ; ; (, 2020 IEEE Photonics Conference (IPC))
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Environmental Science & Technology)
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  5. ; ; ; ; ; ; (, Journal of Lightwave Technology)
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  6. ; ; ; ; ; (, Optics Letters)
    We propose a Hermite–Gaussian (HG) mode-demulti-plexing hybrid (MDH) for coherent detection of mode-division multiplexed signals. The MDH, which performs multiple functionalities, including demultiplexing, local oscillator splitting, and optical 90-deg mixing, is realized based on the multi-plane light conversion technique. An isosceles right triangle output layout is employed to reduce the number of phase masks to fewer than the number of modes, significantly simplifying the construction of the MDH. A 10-Hermite–Gaussian (HG) mode MDH with only five phase masks is demonstrated by numerical simulation, achieving an insertion loss (IL) and mode dependent loss as low as −<#comment/> 2.3 and 1.7 dB, respectively. The IL was further reduced to −<#comment/> 1.5 d B through optimization of MDH parameters, such as the beam waists of the input HG modes and the output spots. 
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  7. ; ; ; ; ; ; (, Atmospheric Chemistry and Physics)
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  8. ; ; ; ; ; ; ; ; ; ; et al (, Science of The Total Environment)
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  9. ; ; ; ; ; ; ; ; ; ; et al (, Environmental Science & Technology)
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  10. ; ; ; ; ; ; ; ; ; ; et al (, Frontiers in Optics 2018)
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