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InP-based spotsize converter for integration with switching decvices

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Author: Stulemeijer, J. · bakker, A.F. · Moerman, I. · Groen, F.H. · Smit, M.K.
Institution: TNO Fysisch en Elektronisch Laboratorium
Source:IEEE Photonics Technology Letters, January, 1, 11, 81-83
Identifier: 95608
Keywords: Integrated optics · Optical communication · Optical fiber connecting · Optical waveguides · Wavelength-division multiplexing


We have designed and fabricated an InGaAsP-InP based spotsize converter (SSC), which is compatible with the waveguide structure used in monolithic integrated ADM's and OXC's. In a first experiment, a total coupling loss to a cleaved fiber of 4.2 dB for TE and 3.9 dB for TM was realized with a 1.5 mm-long SSC. The 1-dB alignment tolerances improved from 0.75 μm to 2.4 and 2.2 μm for the horizontal and vertical direction, respectively