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Proceedings Paper

Design of flat-field arrayed waveguide grating based on aberration theory
Author(s): Si Lu; Yingbai Yan; Zhehai Zhou; Guofan Jin; Edwin Y. B. Pun
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Paper Abstract

A new type flat-field arrayed waveguide grating (AWG) has been designed. The focal points of all wavelengths of operation distribute on a straight line. With parallel output waveguides, it¡¯s convenient to connect with fiber-array directly. Flat-field AWG could function as a spectrometer when the output waveguides are thrown off. The work based on the developed aberration theory of AWG. In this theory, the restrains imposing on the conventional Rowland-type AWG have been removed. Various restrains will generate new type structures. In the flat-field AWG design, the restrains come from the concurrent imaging theory. Three aberration-free points restrain three dominant geometry parameters of AWG, geometry of star couplers, phased array ports distribution, and length increment between adjacent paths. A 16-channel flat-field AWG is designed. As stigmatic points introduced, the aberration of the device is much lower than that of the conventional Rowland-type AWG.

Paper Details

Date Published: 11 July 2002
PDF: 6 pages
Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, (11 July 2002); doi: 10.1117/12.475572
Show Author Affiliations
Si Lu, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Zhehai Zhou, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Edwin Y. B. Pun, City Univ. of Hong Kong (Hong Kong)

Published in SPIE Proceedings Vol. 4870:
Active and Passive Optical Components for WDM Communications II
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

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