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Low-loss substrate-removed (SURE) optical waveguides in GaAs-AlGaAs epitaxial layers embedded in organic polymers

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5 Author(s)
Sakamoto, S.R. ; Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA ; Ozturk, C. ; Young Tae Byun ; Ko, J.
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Low-loss single-mode semiconductor rib optical waveguides fabricated in GaAs-AlGaAs epitaxial layers are removed from GaAs substrates and bonded to transfer substrates using a benzocyclobutene organic polymer. Optical quality facets were obtained by cleaving through the transfer substrate. An average propagation loss of 0.39 and 0.48 dB/cm at 1.55 μm wavelength for TE and TM polarizations, respectively, were measured. This was on average 0.05 dB/cm greater than control guides fabricated in GaAs-AlGaAs epilayers on GaAs substrates with air as the top cladding. This demonstrates the feasibility of a process enabling semiconductor polymer integration and processing both sides of an epitaxial layer.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 7 )