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Demonstration of a Linearized Traveling Wave Y-Fed Directional Coupler Modulator Based on Electro-Optic Polymer

TitleDemonstration of a Linearized Traveling Wave Y-Fed Directional Coupler Modulator Based on Electro-Optic Polymer
Publication TypeJournal Article
Year of Publication2011
AuthorsLee, B., C-Y. Lin, A. X. Wang, and R. T. Chen
JournalJournal of Lightwave Technology
Volume29
Issue13
Pagination1931 - 1936
Date Published07/2011
ISSN1558-2213
Abstract

In this paper, we demonstrate a traveling wave linear modulator for high speed analog optical link applications. A two-section Y-fed directional coupler modulator based on electro-optic polymer is linearized with Δβ-reversal technique to suppress the third-order intermodulation distortions. A traveling wave electrode with low RF loss and excellent velocity matching is designed and demonstrated with the bandwidth-length product of 125 GHz ·cm. The 3-dB electrical bandwidth of 10 GHz and the spurious free dynamic range of 110 ±3 dB/Hz<sup>2/3</sup> over the modulation frequency of 2-8 GHz are measured form the fabricated device.

DOI10.1109/JLT.2011.2150735
Short TitleJ. Lightwave Technol.