NPFC - MIL-PRF-49291
FIBER, OPTICAL, (METRIC), GENERAL SPECIFICATION FOR
Organization: | NPFC |
Publication Date: | 14 July 1997 |
Status: | inactive |
Page Count: | 17 |
scope:
This specification covers the general requirements and characteristics of optical fibers for signal transmission. The fiber is defined as the core, cladding, and protective coatings applied during the fiber drawing process.
The optical fibers specified herein are categorized as follows.
The type designation is defined by the mode volume of the optical fiber.
Type I. Multimode (MM).
Type II. Single-mode (SM).
The class designation for Type I fibers is defined by the nature of refractive index profile, given by the profile parameter (g). The class designation for Type II fibers is determined by the nature of their dispersion characteristics.
Type I fibers.
Class 1. Graded index: 3>g>1.
Class 2. Quasi-graded index: 10>g>3.
Class 3. Step index: g>10.
Class 4. Other.
Type II fibers.
Class 5. Dispersion unshifted.
Class 6. Dispersion shifted.
Class 7. Dispersion flattened.
Class 8. Other.
The composition designation is defined by the composition of the optical fiber core and cladding (see 6.4) as follows:
A. Glass and glass.
B. Glass and plastic.
C. Plastic and plastic. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Supply Center Columbus, ATTN: DSCC-VAT, 3990 E. Broad Street, Columbus, OH 43216-5000, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
The size designation is defined by the diameter of the optical core, and cladding in micrometers (µm).
Size I. 4.0 - 8.5 µm (Range of nominal mode field diameter 1550 ± 20 nanometers (nm))/125 µm.
Size II. 8.5 - 10 µm (Range of nominal mode field diameter at 1310 ± 20 nanometers (nm))/125 µm.
Size III. 50/125 µm.
Size IV. 62.5/125 µm.
Size V. 100/140 µm.
Size VI. 200/230 µm.
Size VII. 400/430 µm.
The wavelength designation is defined by the primary wavelengths of operation of the fiber.
A. 850 nm.
B. 850 and 1300 nm.
C. 1300 nm.
D. 1300 and 1550 nm.
E. 1550 nm.
intended Use:
The optical fibers covered by this specification are intended for use in any application where their performance characteristics are required. The fibers are suitable for installation on aerospace... View More
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