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10-GHz-spaced 1010-channel tandem AWG filter consisting of one primary and ten secondary AWGs

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4 Author(s)
Takada, K. ; NTT Photonics Labs., Ibaraki, Japan ; Abe, M. ; Shibata, T. ; Okamoto, K.

A very large channel-count arrayed waveguide grating (AWG) filter with more than 1000 channels is described. It was achieved by cascading a 1-THz-spaced flat-top 1/spl times/10 AWG as a primary filter and ten 10-GHz-spaced 1/spl times/160 AWGs as secondary filters in a tandem configuration. We achieved good adjacent and accumulated channel crosstalk values ranging from -32 to -25 dB and from -24 and -18 dB, respectively.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 6 )