Lasers, Fiber Optics, and Communications

Acousto-optic interaction in biconical tapered fibers: shaping of the stopbands

[+] Author Affiliations
Gustavo Ramírez-Meléndez, Miguel Ángel Bello-Jiménez, Amparo Rodríguez-Cobos, Raúl Balderas-Navarro

Universidad Autónoma de San Luis Potosí, Instituto de Investigación en Comunicación Óptica, Av. Karakorum 1470 Lomas 4a Secc., 78210 San Luis Potosí, S.L.P, México

Christian Cuadrado-Laborde

Instituto de Física Rosario (CONICET-UNR), Optical Metrology Lab, Ocampo y Esmeralda, S2000EZP Rosario, Argentina

Universidad de Valencia, Departamento de Física Aplicada y Electromagnetismo, ICMUV, C/Dr. Moliner 50, Burjassot, 46100 Valencia, Spain

Antonio Díez, José Luis Cruz, Miguel Vicente Andrés Bou

Universidad de Valencia, Departamento de Física Aplicada y Electromagnetismo, ICMUV, C/Dr. Moliner 50, Burjassot, 46100 Valencia, Spain

Opt. Eng. 55(3), 036105 (Mar 08, 2016). doi:10.1117/1.OE.55.3.036105
History: Received November 13, 2015; Accepted February 16, 2016
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Abstract.  The effect of a gradual reduction of the fiber diameter on the acousto-optic (AO) interaction is reported. The experimental and theoretical study of the intermodal coupling induced by a flexural acoustic wave in a biconical tapered fiber shows that it is possible to shape the transmission spectrum, for example, substantially broadening the bandwidth of the resonant couplings. The geometry of the taper transitions can be regarded as an extra degree of freedom to design the AO devices. Optical bandwidths above 45 nm are reported in a tapered fiber with a gradual reduction of the fiber down to 70  μm diameter. The effect of including long taper transition is also reported in a double-tapered structure. A flat attenuation response is reported with 3-dB stopband bandwidth of 34 nm.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Gustavo Ramírez-Meléndez ; Miguel Ángel Bello-Jiménez ; Christian Cuadrado-Laborde ; Antonio Díez ; José Luis Cruz, et al.
"Acousto-optic interaction in biconical tapered fibers: shaping of the stopbands", Opt. Eng. 55(3), 036105 (Mar 08, 2016). ; http://dx.doi.org/10.1117/1.OE.55.3.036105


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