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Journal of Nanomaterials
Volume 2014, Article ID 310601, 5 pages
Research Article

Nonnegative Matrix Factorization Numerical Method for Integrated Photonic Cavity Based Spectroscopy

1Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong University, Shanghai 200092, China
2Department of Computer Science, East China Normal University, 500 Dongchuan Road, Shanghai 200235, China
3Key Laboratory of Polarized Materials and Devices, East China Normal University, Shanghai 200241, China

Received 29 November 2013; Accepted 7 January 2014; Published 13 February 2014

Academic Editor: Wen Lei

Copyright © 2014 Zhengyu Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nonnegative matrix factorization numerical method has been used to improve the spectral resolution of integrated photonic cavity based spectroscopy. Based on the experimental results for integrated photonic cavity device on Optics Letters 32, 632 (2007), the theoretical results show that the spectral resolution can be improved more than 3 times from 5.5 nm to 1.8 nm. It is a promising way to release the difficulty of fabricating high-resolution devices.