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N \times N Cyclic-Frequency Router With Improved Performance Based on Arrayed-Waveguide Grating

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5 Author(s)
Kamei, S. ; NTT Photonics Labs., NTT Corp., Atsugi, Japan ; Ishii, M. ; Kaneko, A. ; Shibata, T.
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We have developed an NxN cyclic-frequency router with improved performance by employing two types of modified configuration; a uniform-loss and cyclic-frequency (ULCF) arrayed-waveguide grating (AWG) and an interconnected multiple AWG. We have demonstrated a compact 50-GHz-spacing 64x64 ULCF-AWG router with low and uniform insertion losses of 5.4-6.8 dB and frequency deviations from the grid of less than plusmn8 GHz. We have also demonstrated a 100-GHz-spacing 8x8 interconnected multiple-AWG router with a practical configuration, very low and uniform insertion losses of 2.3-3.4 dB, and frequency deviations from the grid of less than plusmn6 GHz. We discuss the suitable or realizable scale N of the two types of routers by comparison with a conventional AWG router in terms of optical and dimensional performance and productivity.

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Lightwave Technology, Journal of  (Volume:27 ,  Issue: 18 )