Title

High-Speed Programmable Optical Attenuator

Abstract

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.

Publication Date

1-1-2000

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

4046

Number of Pages

96-100

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.391937

Socpus ID

0033725579 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0033725579

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