Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

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Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

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Ramírez-Meléndez, G.; Bello-Jiménez, M.; Pottiez, O.; Andrés, Miguel V. Perfil
This document is a artículoDate2017

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An all-fiber acousto-optic tunable bandpass filter based on a 1.185-mm long coreless core mode blocker is reported. Experimental results demonstrate a minimal insertion loss of 1.2 dB at the optical resonant wavelength of 1527.7 nm with 3-dB optical bandwidth of 0.83 nm. The optimization of the device takes into account the attenuation of the acoustic wave and leads to an asymmetric configuration in which the coupling section is shorter than the recoupling part. Under the effect of a standing flexural wave the device can be operated as a bandpass modulator. The device exhibits a maximum modulation depth of 28%, 4 dB of insertion loss and 0.97 nm of optical bandwidth at 4.774 MHz.

    G. Ramírez-Meléndez, M. Bello-Jiménez, O. Pottiez y M. V. Andrés, "Improved All-Fiber Acousto-Optic Tunable Bandpass Filter", Photonics Technology Letters, Vol. 29, pp. 1015-1018, 2017

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