Publication:
Tunable Optical Filters Using Compound Ring Resonators for DWDM

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URI: https://hdl.handle.net/10016/2572
ISSN: 1041-1135
DOI: 10.1109/LPT.2003.815328
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tunable-optical-PTL-2003.pdf (279.59 KB)
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2003-08
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IEEE
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Abstract
The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a directional coupler. The loop mirror is implemented using a Sagnac configuration to have the same optical path between the signals to be interfered (copropagating and counterpropagating ones). The filter structure allows optical integration for having higher free-spectral ranges. Simple design equations for the filter parameters and the tuning are reported. Measurements on a passive optical fiber tunable filter are presented. There is a good agreement between measurements and theory.
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mirrors, optical fibre filters
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IEEE Phtotonics Technology Letters, vol. 15, nº 8, ago. 2003, pp. 1085-1087
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