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Silica-based 1 x 32 splitter integrated with 32 WDM couplers using multilayered dielectric filters for fiber line testing at 1.65 μm

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6 Author(s)
Hida, Y. ; NTT Opto-Electron. Labs., Ibaraki, Japan ; Inoue, Y. ; Hanawa, F. ; Fukumitsu, T.
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We propose an integrated splitter with reflection-type couplers for combining the modules used for passive double star transmission and fiber line testing systems. We fabricated a silica-based 1×32 splitter with an array of 32 1.3-1.55/1.65 μm wavelength-division-multiplexing couplers using planar lightwave circuit technologies and by embedding multilayered dielectric filters in cross-waveguides located in the splitter outputs. We developed a 64-fiber array block to connect the 64 coupler input/output ports. We achieved low loss characteristics of /spl les/17.5 dB at 1.31 and 1.55 μm for the splitter and of /spl les/2.2 dB at 1.65 μm for the couplers.

Published in:

Photonics Technology Letters, IEEE  (Volume:11 ,  Issue: 1 )