Effects of acoustic reflection on the performance of a cladding-etched all-fiber acoustooptic variable optical attenuator

Effects of acoustic reflection on the performance of a cladding-etched all-fiber acoustooptic variable optical attenuator

We analyzed the effects of acoustic reflection on the performance of an acoustooptic variable optical attenuator on a cladding-etched single-mode fiber. It is shown that the acoustic reflection will generate time-dependent modulation on the output optical signal and reduce the maximum achievable att...

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Veröffentlicht in:IEEE photonics technology letters 2004-01, Vol.16 (1), p.150-152
Hauptverfasser: Au, A.A., Qun Li, Chien-Hung Lin, Lee, H.P.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic absorption
Acoustic propagation
Acoustic reflection
Acoustic waves
Acoustics
Acoustooptics
Attenuation
Attenuators
Cladding
Devices
Etching
Gold
Optical attenuators
Optical coupling
Optical fiber devices
Reflection
Signal generators
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Zusammenfassung:We analyzed the effects of acoustic reflection on the performance of an acoustooptic variable optical attenuator on a cladding-etched single-mode fiber. It is shown that the acoustic reflection will generate time-dependent modulation on the output optical signal and reduce the maximum achievable attenuation of the device. By employing a tapered fiber structure and using vacuum grease as the acoustic absorber, we showed that the acoustic reflectance can be reduced by two orders and the maximum attenuation of the device is increased from -10 to -29 dB.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2003.819395