| Zugriffsnummer | 16863 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Optical-Fiber power meter comparison between NIST and PTB |
| Autor(in); Institution |
Vayshenker, I.; National Institute of Standards and Technology, Boulder, USA
Haars, Holger; 4.13, Angewandte Radiometrie, PTB-Braunschweig
Li, X.; National Institute of Standards and Technology, Boulder, USA
Lehman, J. H.; National Institute of Standards and Technology, Boulder, USA
Livigni, D. J.; National Institute of Standards and Technology, Boulder, USA
|
| Quelle/Jahr | Journal of Research of the National Institute of Standards and Technology: 108 (2003), 5, 391 - 394 |
| ISSN | 1044-677X (PRINT) ; 2165-7254 (ONLINE) |
| URL | |
| Verlag | Washington, DC: US Gov. Print. Off. [u.a.] |
| Freie Schlagworte | calibration ; cryogenic radiometer ; fiber ; international comparison ; optical fiber ; optical power meter ; uncertainty |
| Zusammenfassung | In a previous paper, we reported results of a comparison between NIST and PTB of reference standards used in the calibration of optical-fiber power meters. That comparison was performed with collimated laser beams at 1302 nm and 1546 nm, and did not address additional considerations that arise when a divergent beam, such as that exiting an optical fiber, is used. Here we address that additonal issue with a further comparison. For optical-fiber power meter measurements, the primary standards of both NIST and PTB are cryogenic radiometers that have uncertainties of about 10-4 Partly because these primary standards cannot be used with divergent beams, both laboratories use thermal detectors as refercence standards in providing calibration services. These reference standards are calibrated against the cryogenic radiometers using collimated beams, but are used with divergent beams. In the study reported here, the reference standards maintained by our two laboratories were compared using beams from an opitcal fiber and germanium photodiodes mounted in a trap structure that has been shown to provide a uniform response over a wide field of a view. The Ge-trap detector was calibrated first at NIST against the NIST reference standard, then at PTB against the PTB reference standard, and then against at NIST. The same lasers, operating at 1302 nm and 1546 nm, and optical-fiber cable were used at both sites. Both laboratories employed a substitution method for their measurements. |
| Kostenfreier Zugang | Open Access Gold |