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Proceedings Paper

Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components
Author(s): Koichi Takiguchi
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Paper Abstract

We report on an integrated-optic spectrum synthesis circuit that can individually control amplitude and phase of 40 GHzspaced and 64 frequency components. This synthesis circuit is fabricated with silica waveguide technology, and is composed of two arrayed-waveguide gratings (AWGs), and an array of variable optical attenuators (VOAs) and phase shifters. The AWGs function as frequency multi/demultiplexers, and the VOA and phase shifter are used to adjust amplitude and phase of each spectral component, respectively. The size of the circuit is 80 mm x 80 mm, and the manipulation accuracy relating to the VOA and phase shifter is in the order of 0.1 dB and 0.01, respectively. The VOA extinction ratio, namely, the dynamic range is about 30 dB.

Paper Details

Date Published: 31 January 2020
PDF: 4 pages
Proc. SPIE 11309, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX, 113090F (31 January 2020); doi: 10.1117/12.2544569
Show Author Affiliations
Koichi Takiguchi, Ritsumeikan Univ. (Japan)

Published in SPIE Proceedings Vol. 11309:
Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX
Guifang Li; Xiang Zhou, Editor(s)

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