W/D S/S BY TIA-455-177
INTRODUCTION
This test describes a procedure to determine the numericalaperture of step-index, glass core, glass clad and plastic cladoptical fibers (fiber material class Ic, IIa, and IIb as listed inEIA-4920000-A) from the fiber far-field radiation pattern. Theapplicability and usefulness of this procedure for other classes ofstep index fiber has not been determined.
This procedure describes three methods by which the angularradiant intensity (far field) distribution from an optical fibercan be measured. Methods A and B are angular scans of the far fieldpattern; Method C is a scan of the spatial transform of the angularintensity pattern.
- Edition:
- 96
- Published:
- 07/01/1996
- Number of Pages:
- 17
- File Size:
- 1 file , 350 KB
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