Theoretical investigation of a notch filter using a long-period grating based on the sampling theorem

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A notch filter using a different grating scheme is investigated theoretically. The grating is the thermo-optic index change induced by individually controllable heaters that are periodically arranged on the filter surface. If the index change pattern induced by the heaters is in the form of sampling a periodic index change, the transmission spectrum of the filter has the same resonance band as that generated by the periodic index change. Simulation results show that the attenuation, bandwidth, and center wavelength of a resonance band are independently adjustable. In addition, it is shown that the transmission spectrum may be tailored to arbitrary predictable shapes. Finally, the realization of the filter is discussed. (c) 2006 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-07
Language
English
Article Type
Article
Keywords

SWITCH; MODULE

Citation

OPTICS COMMUNICATIONS, v.263, no.2, pp.214 - 218

ISSN
0030-4018
DOI
10.1016/j.optcom.2006.02.002
URI
http://hdl.handle.net/10203/89707
Appears in Collection
EE-Journal Papers(저널논문)
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