20 September 1996 High-density wavelength division multiplexers using binary microlenses
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A high density grating wavelength division multiplexer whose working wavelength is 1.536 - 1.564 micrometers for eight channels spaced 4 nm using binary optical microlenses is reported. The optimal binary optical microlenses is designed and its diffraction far field is analyzed using phase balance design method and the accumulating integral method. The coupling efficiency and the fundamental mode proportion in the receiving fiber are calculated.
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Xiaopin Wu, Xiaopin Wu, Weizhong Tang, Weizhong Tang, Wen Zhou, Wen Zhou, "High-density wavelength division multiplexers using binary microlenses", Proc. SPIE 2893, Fiber Optic Components and Optical Communication, (20 September 1996); doi: 10.1117/12.252060; https://doi.org/10.1117/12.252060

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