Fiber Optic Calibration Considerations

ABSTRACT

Calibration of optical test instruments designed for fiber optic solutions applications will be reviewed.Precise measurement parameters will incorporate optical power, optical attenuation and wavelength; however numerous companies will probably be afforded to optical power.A complete discussion of primary; secondary and working calibration standards will probably be paid special attention made available to metrology techniques.Of peculiar significance is undoubtedly an optical fiber together with a collimator light beam.Furthermore, the traceability program for ophthalmic standards in the usa throughout the national bureau of standards will probably be paralleled for the traceability program offered in Janpan and thru the electrotechnical laboratory and Japanese metals and machinery inspection institute.These calibration topics will probably be presented with regards to the optical calibration capabilities of fiberstore.

INTRODUCE

Concerning optical power for Fiber Optic Cable Suppliers , a federal standard is available in the states from the federal bureau of standards and also in Japan from the electrotechnical laboratory and Japanese metals and machinery inspection institute.NBS maintains national standards for the usa and gives calibration services.In Japan, url, maintains national standards working jointly with jati which provides calibration services.America is traceable to both nibs and etl/jmi for optical power narcissus corporation keeps a type called bastion laboratory in Japan in line with mil -std-45662.In the usa across laboratory, as outlined by Mil -std-45562.

OPTICAL POWER

Numerous tips mut have proven to insure repeatable, accurate measurements in the calibration process.For that parallel light beam, optics should be made to obtain a beam diameter of 2 to 3mm in having an approximated causation profile.Moreover, the beam must be attached to obtain a convergence angle of below 5.Beam diameter, convergence and profile are really meaningful when calibrating a semiconductor sensor by using a parallel beam, however, dielectric sensors for example calorimeters and theodolites are less vulnerable to these three conditions.anristu stricly adheere to the there conditions,although we utilize a parallel light beam to calibrate thermolectric snsors as well as a Bulk Fiber Optic Cable  to calibrate semiconductro sensors

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CONCLUSION

In order to reduce the effects of semiconductor reflectivity.For example connector adaptors coated with antireflective material, are used to maintain an uncertainty contribution of no more than the fiber optic connector employed during calibration, regarding the connectorized fiber optic interface ,several paramenters must be considered,semiconductor sensors posseas reflectivity conefficents ranging from 20to 50%,therefore ,techniques to reduce multiple refiections between,the fiber end surface and the sensor must be undertaken ,thermoelectirc sensors typically instroduce reflectoins of less than 21,thereby introducing loss of a potential problem.As antitrust, utmost care is achieved.