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  • Received: Sep. 11, 2012

    Accepted: Nov. 16, 2012

    Posted: Jan. 29, 2013

    Published Online: Jan. 29, 2013

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    DOI: 10.3788/col201311.032501

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    Xiao Ma, Jianjun He, Mingyu Li. Echelle dif fraction grating based high-resolution spectrometer-on-chip on SiON waveguide platform[J]. Chinese Optics Letters, 2013, 11(3): 032501

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Chinese Optics Letters, Vol. 11, Issue 3, 032501 (2013)

Echelle dif fraction grating based high-resolution spectrometer-on-chip on SiON waveguide platform

Xiao Ma, Jianjun He, and Mingyu Li

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    Abstract

    An echelle diffraction grating based high-resolution spectrometer-on-chip on silicon oxynitride (SiON) waveguide platform operated at a wavelength range of 850 nm is demonstrated. The chip comprises 120 output waveguides with 0.25-nm wavelength channel spacing and has a size of only 11 \times 6 (mm). The experimental results show that the insertion loss is –14 dB, the measured adjacent channel crosstalk is less than –25 dB, the 3 dB channel bandwidth is < 0.1 nm, and the channel non-uniformity is 3 dB for 56 channels with a wavelength ranging from 838 to 852 nm.

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