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Optical Engineering • Open Access

Automatic power control with electronic amplified spontaneous emission compensation
Author(s): Craig Michie; Steve Conner; A. E. Kelly; Ivan Andonovic

Paper Abstract

Semiconductor-based optical amplifiers (SOAs) offer solutions to a variety of amplification needs covering wavelengths ranging from of 0.6 to 1.6 μm. Gain adjustment, through the bias current, enables automatic power control to be implemented. However, this requires knowledge of the signal strength. The amplified spontaneous emission power, particularly in high gain SOAs, can be significant with respect to the signal strength, and therefore additional components may be required to derive an accurate measure of the signal strength. This increases both the complexity and cost of implementing automatic power control (APC). We report on a method for estimating the signal strength based on measurement of the total output power and the SOA drive current. The method is extendable to other methods of optical amplification, e.g., erbium-doped fiber amplifiers.

Paper Details

Date Published: 1 August 2007
PDF: 3 pages
Opt. Eng. 46(8) 080501 doi: 10.1117/1.2766946
Published in: Optical Engineering Volume 46, Issue 8
Show Author Affiliations
Craig Michie, Univ. of Strathclyde (United Kingdom)
Steve Conner, OptoSci Ltd. (United Kingdom)
A. E. Kelly, Univ. of Glasgow (United Kingdom)
Ivan Andonovic, Univ. of Strathclyde (United Kingdom)

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