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Laterally coupled InP-based single-mode microracetrack notch filter

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9 Author(s)
Grover, R. ; Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA ; Ibrahim, T.A. ; Ding, T.N. ; Leng, Y.
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We demonstrate an InP-based microracetrack notch filter with >25-dB extinction and 19-nm free-spectral range at 1550 nm. The curved section of the resonator has a radius of 2.25 μm. To our knowledge, this represents the best extinction and the smallest radius of curvature for such a device to date.

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Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 8 )