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Use of multimode interference couplers to broaden the passband of wavelength-dispersive integrated WDM filters

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10 Author(s)

We describe how multimode interference couplers (MMI) may be used to broaden and flatten the passband of integrated wavelength-dispersive filters. We discuss the approach and demonstrate its effectiveness with a passband-broadened InP arrayed waveguide filter operating at 1.5 μm.

Published in:

Photonics Technology Letters, IEEE  (Volume:8 ,  Issue: 10 )