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Proceedings Paper

Investigation on electro-optic optical comb generation with higher spectral resolution and bandwidth
Author(s): Takahide Sakamoto; Isao Morohashi
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Paper Abstract

With a use of electro-optic modulator based comb generator, ultra-wideband optical comb is stably and flexibly synthesized from a continuous-wave light. Larger modulation depth at a higher repetition rate would proportionally enhance bandwidth of the generated comb. Practically, however, achievable modulation depth is limited by available output power of microwave amplifiers. In addition, the repetition rate, i.e. comb spacing, is determined by system-side requirements. For example, frequency spacing of the generated comb should fit to the wavelength grid of optical fiber networks. Narrower frequency spacing is requested for photonic measurements assisted by advanced electrical signal processing based on low-speed electronics. In this paper, through numerical analysis, we propose and discuss configurations of serially cascaded Mach-Zehnder modulator-based flat comb generators, aiming for optical comb generation satisfying both higher bandwidth and narrower frequency spacing.

Paper Details

Date Published: 4 March 2016
PDF: 6 pages
Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 97420J (4 March 2016); doi: 10.1117/12.2213848
Show Author Affiliations
Takahide Sakamoto, National Institute of Information and Communications Technology (Japan)
Isao Morohashi, National Institute of Information and Communications Technology (Japan)

Published in SPIE Proceedings Vol. 9742:
Physics and Simulation of Optoelectronic Devices XXIV
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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