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Proceedings Paper

Inherent RF linearized bandwidth broadening capability of an ultra-linear optical modulator
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Paper Abstract

Almost all existing resonator-based linearized optical modulators suffer from an inherent RF bandwidth narrowing that limit their applications and performance. Here, we show an ultra-linear optical modulator, called IMPACC, (Interferometric Modulator with Phase-modulating And Cavity-modulating Components) that has three unique RF bandwidth characteristics, which are not present in other resonator-based linearized optical modulators. We demonstrate these unique characteristics by contrasting IMPACC's performance to the Resonator-Assisted Mach Zehnder Interferometer (RAMZI) modulator. First, IMPACC can enhance its linearized RF bandwidth up to ~ 20% of central RF frequency (compared to ~1% for RAMZI). Second, unlike RAMZI, the RF bandwidth enhancement has a near-flat response characteristic across this bandwidth window. Third, IMPACC can maintain an excellent spurious free dynamic range (SFDR) capability (>130 dB at 1Hz bandwidth) across this window. The wide linear bandwidth capability is also demonstrated for modulation frequencies up to 75GHz.

Paper Details

Date Published: 24 January 2011
PDF: 8 pages
Proc. SPIE 7958, Broadband Access Communication Technologies V, 795804 (24 January 2011); doi: 10.1117/12.875714
Show Author Affiliations
Benjamin B. Dingel, Nasfine Photonics Inc. (United States)
Andru Prescod, The City College of CUNY (United States)
Corning Inc. (United States)
Nicholas Madamopoulos, The City College of CUNY (United States)

Published in SPIE Proceedings Vol. 7958:
Broadband Access Communication Technologies V
Benjamin Dingel; Raj Jain; Katsutoshi Tsukamoto, Editor(s)

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