A wavelength multiplexer using cascaded three-dimensional vertical couplers
- 10 January 2000
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 76 (3), 282-284
- https://doi.org/10.1063/1.125722
Abstract
A four-channel wavelength multiplexer/demultiplexer for sparse wavelength division multiplexing was demonstrated using cascaded three-dimensional (3D) vertical couplers. 17 nm channel spacing with crosstalk less than 15 dB was achieved. Strong coupled vertical couplers were fabricated using wafer bonding to invert a conventionally processed epitaxial layer and bond to a new host substrate. This technology makes the fabrication of 3D photonic integrated circuits and the realization of multilevel optical interconnects possible.Keywords
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