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RESEARCH PRODUCT
Improved All-Fiber Acousto-Optic Tunable Bandpass Filter
Miguel V. AndrésGustavo Ramírez-meléndezOlivier PottiezMiguel Bello-jiménezsubject
Materials scienceOptical fiber02 engineering and technology01 natural scienceslaw.invention010309 opticsAmplitude modulationOpticsBand-pass filterlaw0103 physical sciencesInsertion lossOptical fibersElectrical and Electronic EngineeringModulationbusiness.industryAttenuationBandwidth (signal processing)021001 nanoscience & nanotechnologyUNESCO::FÍSICA::Óptica ::Fibras ópticasAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsWavelengthAcoustic waves:FÍSICA::Óptica ::Fibras ópticas [UNESCO]ModulationCouplings0210 nano-technologybusinessOptical attenuatorsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-15 | IEEE Photonics Technology Letters |