Performance Assessment of a QPSK Coherent Demodulator Based on Organic-Inorganic Hybrids
authors Bastos, ARN; Shahpari, A; Carlos, LD; Lima, M; Andre, PS; Ferreira, RAS
nationality International
journal 2017 19TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON)
author keywords photonic integrated circuit; 90 degrees hybrid coupler; quadrature phase shift keying; error vector magnitude; phase deviation; organic-inorganic hybrids
keywords WAVE-GUIDE COUPLERS; FABRICATION; NETWORKS
abstract Coherent optical systems offer enhanced possibilities to increase data transmission capacity. To implement these systems, optical demodulators are required to decode the data. In this context, optical demodulators for a Quadrature Phase Shift Keying (QPSK) modulation based on 90 degrees hybrid couplers are presented. The devices were produced by direct UV-laser patterning on sol-gel derived organic-inorganic hybrids, and the input-output ports transfer function revealed the dependence of the optical signal phase. Therefore, QPSK symbols were decoded, and the associated constellation diagram was analysed in real-time. To assess the device performance the error vector magnitude and phase deviations were obtained (5% and 1 degrees, respectively) making the produced device a promising choice to replace current QPSK receivers.
publisher IEEE
issn 2162-7339
isbn 978-1-5386-0859-3
year published 2017
web of science category Engineering, Electrical & Electronic; Optics; Telecommunications
subject category Engineering; Optics; Telecommunications
unique article identifier WOS:000427031500294

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