BS EN 61290-10-2:2008

BS EN 61290-10-2:2008 Optical amplifiers. Test methods. Multichannel parameters. Pulse method using a gated optical spectrum analyzer

BS EN 61290-10-2 applies to optical fibre amplifiers (OFA) using active fibres, containing rare-earth dopants, currently commercially available.

The object of BS EN 61290-10-2 is to establish uniform requirements for accurate and

reliable measurements of the signal-spontaneous noise figure as defined in IEC 61291-1.

BS EN 61290-10-2 specifies a test method that independently detects amplified signal power and amplified spontaneous emission (ASE) power by launching optical pulses into the OFA under test. The ASE level is measured by synchronously measuring the power on an optical spectrum analyzer (OSA) during the optical pulse off period. The average optical signal level is measured by random sampling in the OSA.

The test method described is, in general, for multichannel applications. Single-channel

applications are a special case of multichannel applications.

Contents of BS EN 61290-10-2:

• Scope and object
• Normative references
• Symbols and abbreviated terms
• Apparatus
• Test sample
• Procedure
• General
• Calibration
• Output signal and noise measurement
• Calculations
• Test results
• Pulse repetition frequency measurements
• Bibliography
• Test apparatus for signal-spontaneous noise figure parameter measurement
• Typical arrangement
• Optically switched source module
• Directly modulated source module
• Two arrangements of the optical pulse source module
• Timing diagram
• Set-up to evaluate gain recovery error versus modulation rate
• Gain recovery error versus modulation frequency with pump current as a parameter