Optical calibration laboratory
Our specialist optical calibration laboratory can take on a variety of client work, including calibration of Kingfisher instruments.
Take advantage of our industry-leading experience, accuracy and knowledge to improve your traceable radiometric accuracy with validation of critical optical equipment either pre-test or post-test.
- Optical power meters
- Optical power
- Optical detectors
- Light source wavelength and stability
- Optical attenuator and power meter linearity
- Optical attenuation
- OLTS and ORL meters
- 350 - 1650 nm, 5 nm increments
- Environmental chamber available
- Free space or fiber optic beams
- Up to Class 1M or 2M power levels
We issue certificates conforming to:
Optical calibration laboratory capability
The Kingfisher Optical Calibration Laboratory is accredited by NATA (Australia), to IEC/ISO 17025:2017
The laboratory is accredited to issue traceable calibrations as follows:
Maximum power level any equipment: within IEC 60825 Class 1M or 2M laser safety.
Calibration of optical power with fiber optic interface
Absolute optical power calibration of optical power meters, radiometers and photodiodes:
From 350 to 1650 nm in 5 nm steps, power range +22 to -60 dBm / 158 mW to 1 nW, with least uncertainty of 0.06 dB / 1.4 % and with wavelength accuracy of 0.5 nm, using non-coherent light.
Where relevant: In accordance with TIA-455-231 / IEC 61315 / FOTP 231 Calibration of Fiber Optic Power Meters.
Calibration of optical linearity with fiber optic interface
Optical linearity calibration of attenuators, meters, sources, radiometers and photodiodes:
From +10 to -70 dBm at 1310 & 1550 nm, with least uncertainty of 0.01 dB / 0.2 %, using non-coherent broadband light.
From 0 to -70 dBm at 650 & 850 nm, with least uncertainty of 0.01 dB / 0.2 %.
From +10 to -60 dBm at 850, 1310, 1550 nm, with least uncertainty of 0.1 dB / 0.7 %, using coherent laser light.
In accordance with TIA-455-231 / IEC 61315 / FOTP 231 Calibration of Fiber Optic Power Meters.
Calibration of optical return loss with fiber optic interface
Optical return loss meter calibration:
At 850, 1310, 1550 nm with least uncertainty of 0.04 dB 1.0 % in the range 0 to - 60 dB.
Calibration of optical light source wavelength with fiber optic interface
Absolute optical light source center wavelength calibration from 300-1700 nm with least uncertainty of 0.5 nm and resolution of 0.1 nm.
Calibration of optical light source power with fiber optic interface
Absolute optical power calibration from 350 to 1650 nm in steps of 5 nm, in the range of +22 to -60 dBm / 158 mW - 1 nW, with least uncertainty of 0.06 dB / 1.4 %.
Calibration of optical light source stability with fiber optic interface
Measurement of light source stability from 350 to 1650 nm, in the range +22 to - 70 dBm / 158 mW - 100 pW. From 1 data point / second to 8 hours, with least uncertainty of 0.01 dB / 0.2 %.
Calibration of optical power with a free-space interface (ISO9001 compliant)
Absolute optical power calibration of free-space optical power meters, radiometers and photodiodes:
From 350 to 1650 nm in 5 nm steps, with 2 mm beam diameter, power range +22 to -60 dBm / 158 mW to 1 nW, with least uncertainty of 0.06 dB / 1.4 % and wavelength accuracy of 0.5 nm, using non-coherent light.
Environmental testing (ISO9001 compliant)
Testing can be performed in an environmental chamber from -40 to +100 °C.
Microscope Resolution Verification (ISO9001 compliant)
Microscope resolution verification with USAF test target size down to 137 nm
About the Kingfisher calibration laboratory
Customer instruments are calibrated using equipment that is either calibrated against an in-house primary standard, or fully traceable to internationally accepted standards via NMI, using documented procedures with established accuracy.
The laboratory became the the first commercial fiber optic calibration facility in Asia to gain traceable accreditation in 1993, when it gained NATA certification for calibration of optical power meters. It gained ILAC recognition in 2000. These lapsed some years later, and on 14 November 2019 the Laboratory received NATA / ILAC accreditation once more.
NATA, NMI and ILAC operate under inter-governmental agreements facilitated since 1875 by the BIPM, to ensure that SI unit measurements are accepted worldwide. These agreements tie together all the national standards laboratories such as NMI (Australia), NIST (USA), NPL (UK), METAS (Switzerland) etc.
We serve the Communications, Automotive, Medical, Defense, Building Services, Imaging, Sensors and Manufacturing industries.
ISO/IEC 17025: 2017
ISO/IEC 17025:2017 is the modern global standard for the technical & administrative competence of calibration laboratories. It also defines documentation and personnel requirements.
In conformance with this standard, our calibration certificates also do not show a "suggested recalibration period".
The standard replaces a number of older standards and guides including ISO/IEC Guide 25, EN45001 and ANSI/NCSL-Z540.
TIA-455-231, IEC-61315, FOTP-231: Calibration of fiber optic power meters
The laboratory calibration methods for optical power conform to this standard.
Since 1993, our laboratory has used the concepts embodied in this document, which came out later in 1995. For this early work, we acknowledge the valuable contribution made by the staff of Australia's National Measurement Institute (formerly the CSIRO National Measurement Laboratory).
ISO17025:2017 compliant calibration validity guidance
In past times, re-calibration periods used to be stated exactly for each type of instrument, which tended to result in over or under calibration.
Re-calibration periods compliant with ISO17025:2017 are more nuanced, and as described in ILAC-G24, can take into account a variety of factors such as:
- Your country of operation. For example, in Australia, NATA continues to issue formal guidelines on the traceable metrological validity period, for each type of instrument. NIST in the USA seems to have another view.
- Equipment specifications and history, application and environmental factors.
- Typically, a manufacturer's recommended re-calibration period may be used as a first-off guide.
- Mention of a re-calibration period on an ISO 17025 compliant calibration certificate, or instrument label, is specifically rejected.
Calibration validity is stated on our product brochures and is commonly 3 years. However, as stated above, the user should determine what is appropriate for their organisation.
For customers genuinely interested in demonstrating traceable calibration, this long calibration validity can result in real lifetime cost savings, since the expense and inconvenience of a number of calibration cycles can be avoided.