High-Speed Programmable Optical Attenuator
A high-speed programmable optical attenuator (POA) is introduced that can provide high dynamic range and high resolution attenuation control. An acousto-optic Bragg cell has been used to realize the desired attenuator. Various practical architectures have been proposed to prove the concept. A typical acousto-optic deflector (AOD) based design offers a dynamic range of 46.11 dB. The average resolution is 3.08 dB/volt whereas the best resolution achieved is 0.39 dB/volt. The response time of the AO attenuator is in the sub μs regime, and was observed as low as 0.175 μs. The polarization dependent loss (PDL) was about 0.7 dB, whereas the excess losses were about 1.5 dB.
Proceedings of SPIE - The International Society for Optical Engineering
Number of Pages
Article; Proceedings Paper
Source API URL
Riza, Nabeel A. and Yaqoob, Zahid, "High-Speed Programmable Optical Attenuator" (2000). Scopus Export 2000s. 1242.