Equalization of Gaussian-Like Spectra via Optical Lattice Filters With Symmetric-Feedback Structure

This paper presents a scheme for equalizing Gaussian-like spectra by using all-fiber lattice filters with a symmetric feedback structure. With the proposed design strategy and feedback structure, the output power of Gaussian-like spectra is maximized, and the designed equalization filter can flatten...

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Bibliographic Details
Published in:Journal of lightwave technology 2006-12, Vol.24 (12), p.5103-5110
Main Authors: Wang, Qi Jie, Dong, Zhao Gang, Zhang, Ying, Soh, Yeng Chai
Format: Article
Language:English
Subjects:
Algorithm design and analysis
Analytical models
Applied sciences
Design engineering
Detection, estimation, filtering, equalization, prediction
Electronics
Equalization
Exact sciences and technology
Feedback
Flattening
Gaussian processes
Gaussian-like spectra
Information, signal and communications theory
Lattices
Light emitting diodes
maximally flat spectrum
Optical feedback
Optical filters
optical lattice filter
Optical lattices
Optoelectronic devices
Output feedback
Power generation
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal and communications theory
Signal, noise
Spectra
Strategy
superluminescence light-emitting diode (SLED)
Superluminescent diodes
Telecommunications and information theory
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Summary:This paper presents a scheme for equalizing Gaussian-like spectra by using all-fiber lattice filters with a symmetric feedback structure. With the proposed design strategy and feedback structure, the output power of Gaussian-like spectra is maximized, and the designed equalization filter can flatten the Gaussian-like spectra in the maximally flat sense while satisfying specified spectrum performance. The design scheme is able to efficiently and systematically determine the optimal coefficients of the lattice filter through a recursion algorithm. As an illustrative example, the proposed scheme is applied to the design of an all-fiber equalization filter to flatten the output spectrum of a superluminescence light-emitting diode. Simulation and experimental results are carried out to verify the theoretical analysis
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2006.884493