IEC 61290-1-1:2015

Overview

IEC 61290-1-1:2015 defines a uniform optical spectrum analyzer (OSA) test method for measuring power and gain parameters of single‑channel optical amplifiers. Applicable to erbium/rare‑earth doped fibre amplifiers, Raman OFAs, semiconductor optical amplifiers (SOAs) and planar optical waveguide amplifiers (POWAs), this third edition updates measurement‑apparatus characteristics and the list of addressed amplifier parameters to ensure accurate, repeatable results for commercial OAs and optically amplified modules.

Key topics

• Measured parameters (as defined in IEC 61291-1):
  • Nominal output signal power
  • Gain
  • Polarization‑dependent gain (PDG)
  • Maximum output signal power
  • Maximum total output power
• Test focus: single‑channel amplifiers (multichannel amplifiers are covered by the IEC 61290‑10 series).
• Apparatus requirements (representative highlights from the standard):
  • Optical source: fixed or tunable CW sources with spectral linewidth < 1 nm and side‑mode suppression > 30 dB for lasers.
  • Optical spectrum analyzer (OSA): spectral linearity better than ±0.5 dB, amplitude stability ≤ ±0.2 dB, wavelength uncertainty ≤ ±0.5 nm, spectral resolution ≤ 1 nm.
  • Optical power meter: uncertainty better than ±0.2 dB across OA bandwidth.
  • Accessories: optical isolators, variable attenuators, polarization controllers, low‑reflectance fibre jumpers and repeatable connectors (connection loss repeatability ≤ ±0.2 dB).
• Measurement practices: bracketing amplifiers with isolators to avoid oscillation, maintaining input polarization for PDG and other measurements, and using calibration configurations illustrated in the standard.

Applications

• Manufacturers: product verification, specification sheets and quality control for OFAs, SOAs and POWAs.
• Test labs / OEMs: conformance testing, acceptance testing and performance benchmarking using the OSA test method.
• Systems engineers: characterizing amplifier behavior (gain, PDG, maximum power) for link design, margin analysis and interoperability assessments.
• Procurement/compliance teams: validating supplier claims against internationally recognized test methods.

Related standards

• IEC 61290‑1 - Optical amplifiers - Test methods - Part 1: Power and gain parameters (general framework)
• IEC 61291‑1 - Optical amplifiers - Part 1: Generic specification (terms and definitions)
• IEC 61290‑10 series - Test methods for multichannel/WDM amplifiers
• IEC 60793‑2‑50 - Fibre types (reference for test fibre selection)

Using IEC 61290‑1‑1:2015 ensures consistent, traceable OSA‑based measurements of optical amplifiers-critical for reliable product data, system design and cross‑vendor comparisons in fiber‑optic communications.