Long-wavelength multimode waveguide photodiodes suitable for hybrid optical module integrated with planar lightwave circuit

Abstract

The authors propose a multimode waveguide photodiode utilising asymmetric waveguide structure which is suitable for optical hybrid integration without coupling lenses, and has a high responsivity of 0.95 A/W at a wavelength of 1.31 /spl mu/m. Its 1 dB coupling tolerance to a planar lightwave circuit is /spl plusmn/2 /spl mu/m in the vertical direction.