The National Laboratory for Photometry and Radiometry offers calibration of fiberoptic equipment.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

The scope of the national laboratory includes: 

• Responsivity of fiber optic detectors or power meters (850 nm, 1300 nm, 1550 nm)
• Wavelength of fiber optical sources (600 nm - 1550 nm)
• Wavelength of optical spectrum analysers (600 nm - 1550 nm)

Calibration of power meters are performed in comparison with a reference radiometer. Calibration of wavelength is performed using absorption lines in a gas cell. 

We also offer accredited calibration of: 

• Length scale for OTDR
• Loss deviation for OTDR
• Pulse characteristics for OTDR

The OTDR calibrations are not performed as part of the national laboratory but have separate accreditations. 

We are available for consultation with regard to fiber optic measurements and can also help with validation of equipment or measurement methods. 

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory or as an accredited calibration. 

The National Laboratory for Photometry and Radiometry offers calibration of radiometers, laser power meters and optical detectors.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration is performed in accordance with existing internations standards and recommendations. 

A calibration consists of two parts, spectral responsivity and absolute responsivity. 

Spectral responsivity involves the detector being exposed to light at varying wavelengths from a monochromator in comparison with a reference detector. The calibration can span responsivities from 250 nm to 1600 nm. Typical test objects include silicon, germanium and InGaAs detectors. 

Absolute responsivity is calibrationed with laser light at certain wavelengths e.g. 514 nm, 633 nm or 1550 nm. Either a reference detector or a reference radiometer is used as a reference. Radiometers are typically calibrated at 200 µW up to 10 mW. Laser power meters can be calibrated up to around 800 mW. 

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

The National Laboratory for Length and Dimensional Metrology offers calibration of HeNe-Laser sources at 633 nm.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and spreading metrological competence and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a national laboratory fulfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of the object’s laser frequency is performed via heterodyne measurement against one of Sweden’s primary standards for optical frequency. The standards are Iodine-stabilized He-Ne lasers with a laser frequency in agreement with BIPMs recommended values for the realization of the metre in the mise en pratique.

The results from the calibration are:

• Measured vacuum wavelength
• Relative deviation from the specified vacuum wavelength
• Difference between longest and shortest measured wavelength
• Diagram showing the relative deviation of the vacuum wavelength from specified vacuum wavelength

Additionally the optical power is measured.

The laser frequency calibration certificate is issued under the CIPM MRA.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

Price on request.

The National Laboratory for photometry and radiometry offers calibration of light sources for photometric and radiometric applications.

The National Laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of light sources involve the following parameters: 

• Luminous intensity (Candela)
• Luminous Flux (Lumen)
• Correlated Colour Temperature (Kelvin)
• Spectral Irradiance (W⋅m^-2⋅nm^-1, 250 nm - 2500 nm)

The calibrations are performed in accodance with applicable international standards and recommendations. 

Calibrations are generally performed in comparison with the National Laboratories reference sources or through measurements with a reference instrument. For information about measurement uncertainty, traceability or other details about the calibrations please contact one of the contact persons listed below. 

The calibration takes place at the laboratory for photometry and radiometry in Borås. 

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

The national laboratory for length and dimensional metrology offers calibration of laser sources used in interferometry.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and spreading metrological competence and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a national laboratory fulfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of the object’s laser frequency is performed via heterodyne measurement against one of Sweden’s primary standards for optical frequency. The standards are Iodine-stabilized He-Ne lasers with a laser frequency in agreement with BIPMs recommended values for the realization of the metre in the mise en pratique.

The results from the calibration are:

• Measured vacuum wavelength
• Relative deviation from the specified vacuum wavelength
• Difference between longest and shortest measured wavelength
• Diagram showing the relative deviation of the vacuum wavelength from specified vacuum wavelength

Finally the optical power is measured and a system check of the object is performed against one of our own interferometers over a distance of 3 m.

The laser frequency calibration certificate is issued under the CIPM MRA.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

Price on request.

If you are interested in calibrating environment sensors belonging to the laser system, please mention this when ordering the calibration.

The National Laboratory for Photometry and Radiometry offers calibration of any type of luminance meter or photometer.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

The calibration is performed according to existing international standards and recommendations. 

The calibration is performed against luminance source with CIE Standard Illuminant A (2856K) and can be performed at any luminance level from 0,01 cd/m² to 500000 cd/m². Instruments that measure luminance in foot-lamberts can also be calibrated. The standard service has a measurement uncertainty of 3% as a base but the measurement uncertainty can increase depending on the properties of the device under test as well as for luminance levels above 200000 cd/m². If a lower measurement uncertainty is required then that can be discussed as a speciality service.  

The calibration takes place at the laboratory for photometry and radiometry in Borås.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

The National Laboratory for time and frequency offers calibration of time and frequence via GNSS.

The National Laboratories have the task to maintain the national references standards for each measurement quantity and to spread metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a National Laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

For calibration of more accurate time and frequency standards, we offer on-site calibration using global navigation satellite systems, GNSS (e.g. GPS and Galileo) as an intermediate reference. This requires installation of equipment for reception and storage of data from the GNSS.

The method, known as GNSS Common View, is similar to that used by RISE to provide international traceability.

We can also verify and calibrate the time synchronising and positioning performance of different types of GNSS receivers. 

The method involves calibrating a frequency standard, clock or time scale (DUT) relative to UTC(SP) by means of simultaneous measurements of GPS satellite signals performed by both the customer and by RISE.  The use of common satellites eliminates many of the common measurement errors.  In addition, the changes that are observed in the time intervals [UTC(SP) – DUT] provide an estimate of the DUT frequency relative to UTC(SP).

All instrumentation needed (GNSS receiver, time interval counter, software, etc.) can be supplied and installed by RISE. For continuous monitoring over a longer period of time, equipment can be rented from RISE.

For continuous monitoring, the measured values registered by the customer are transferred automatically to RISE.  The calculation of the results are performed automatically by RISE with the results being sent to the customer by (for example) e-mail.  The results can also be provided through a webpage. How often this is done is agreed with the customer, but can in principle be done on a daily basis.  The accuracy of frequency measurement, averaged over a day, is better than ±1E-13, but does depend on the quality of the DUT.

Installation of instrumentation at the customer is needed.

The National Laboratory for time and frequency offers calibration of any type of stopwatches.

The National Laboratories have the task to maintain the national references standards for each measurement quantity and to spread metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a National Laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large.

The calibration is performed according to international standards and recommendations.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a National Laboratory.