Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 18, Issue 13-16, Pages 1412-1414Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2006.877567
Keywords
coupled-mode analysis; long-period gratings; Mach-Zehnder interferometer; optical fiber sensors
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The inscription of cascaded long-period gratings of different periods in optical fiber permits us to obtain both narrowband and wideband filters in the same spectrum. If used as an optical transducer, it may permit us to detect with the same device-wide and small parameter changes. The transmission spectra have been simulated using-a theoretical model based on LP mode coupling and have been also experimentally demonstrated.
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