= Introduction to Optical Fibers, dB, Attenuation and Measurements by Cisco
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{title2=initial release 2005}
Online text: https://www.cisco.com/c/en/us/support/docs/optical/synchronous-digital-hierarchy-sdh/29000-db-29000.html
Institutional issuer: Cisco. No personal author is identified in the inspected technical note.
The revision history identifies version 1.0 as the initial release on 20 April 2005; the page header also labels that date as its update date.
Cited passages: What is a Decibel?; Base 10 Logarithm Rules; Power/Voltage Gains; Optical Fiber Structure, Fig. 1; Understand Insertion Loss; Calculate a Power Budget; Revision History: 1.0, 20-Apr-2005, Initial Release.
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