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|Title: ||Sagnac loop in ring resonators for tunable optical filters|
|Author(s): ||Vázquez, Carmen|
Vargas, Salvador E.
Sánchez-Pena, José Manuel
|Issued date: ||Aug-2005|
|Citation: ||Journal of Lightwawe Technology. Vol. 23, Issue 8, aug. 2005, pp. 2555-2567|
|Abstract: ||General filter architecture using co- and counterpropagation signals are studied. A specific configuration based on a Sagnac loop within a ring resonator is analyzed. Novel tuning, apart from conventional tuning, is achieved by changing the coupling ratio of a coupler through the adjustment of the equivalent loop length. Full equations describing the filter behavior in passive and active configurations, and simple closed-form formulas to compute the tuning, tolerance, and full-width at half-maximum are reported. The performance of these devices is discussed for their application as selective or channel-dropping ultra-narrow-band filters. The effect of losses and their dispersion properties are also discussed. These devices can be conveniently implemented, using silicon- or InP-integrated optic technology, for they have high free spectral ranges.|
|Publisher version: ||http://www.ieeexplore.ieee.org/iel5/50/32195/01498961.pdf ?tp=&arnumber=1498961&isnumber=32195|
|Keywords: ||Sagnac inerferometers|
|Appears in Collections:||DTE - GDAF - Artículos de Revistas|
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