1、 MIL-PRF-49291D 20 June 2013 SUPERSEDING MIL-PRF-49291C 14 July 1997 PERFORMANCE SPECIFICATION FIBER, OPTICAL, (METRIC) GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the gen
2、eral 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. 1.2 Classification. The optical fibers specified herein are categorized as follows. 1.2.1 Type. The type desi
3、gnation is defined by the mode volume of the optical fiber. Type I. Multimode (MM). Type II. Single-mode (SM). 1.2.2 Class. 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 de
4、termined by the nature of their dispersion characteristics. Type I fibers. Class 1. Graded index: 3g1. Class 2. Quasi-graded index: 10g3. Class 3. Step index: g10. Class 4. Other. Type II fibers. Class 5. Dispersion unshifted. Class 6. Dispersion shifted. Class 7. Dispersion flattened. Class 8. Othe
5、r. 1.2.3 Composition. 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. AMSC N/A FSC 6010 METRIC Comments, suggestions, or questions on this document should be addre
6、ssed to DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to FiberOpticGroupdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot
7、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291D 2 1.2.4 Size. The size designation is defined by the diameters of the optical core and cladding in micrometers (um). Size I. 4.0 - 8.5 um (Range of nominal mode field diameter at 1550 20 nanometers (nm)/125
8、 m. Size II. 8.5 - 10 um (Range of nominal mode field diameter at 1310 20 nanometers (nm)/125 m. Size III. 50/125 m Size IV. 62.5/125 m Size V. 100/140 m Size VI. 200/230 m Size VII. 400/430 m 1.2.5 Wavelength. The wavelength designation is defined by the primary wavelengths of operation of the fibe
9、r. A. 850 nm. B. 850 and 1300 nm. C. 1300 nm. D. 1300 and 1550 nm. E. 1550 nm. 1.3 Part or Identifying Number (PIN). See PIN construction below. Additional manufacturers marking is allowed. PIN construction: M 49291 / X - XXX Military designation Basic optical fiber specification number Optical fibe
10、r specification sheet number Two or three digit alpha-numeric PIN example: M49291/6-04S would indicate: - This Military specification - Specification sheet 6 (Fiber, Optical, Type I, Class I, Size IV, Composition A, Wavelength B, Radiation Resistant (Metric) - 250 +/-15 um coating diameter, space qu
11、alified 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effor
12、t has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. Th
13、e following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Provided by IHSNot for ResaleNo reproduction or networking permitted without li
14、cense from IHS-,-,-MIL-PRF-49291D 3 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-790 - Standard Practice for Established Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts Specifications MIL-STD-1678-2 - Fiber Optical Cabling System Re
15、quirements and Measurements (Part 2: Optical Measurements). MIL-STD-1678-3 - Fiber Optical Cabling System Requirements and Measurements, Physical, Mechanical, Environmental, and Material Measurements (Part 3 of 5 Parts). DEPARTMENT OF DEFENSE HANDBOOK MIL-HDBK-454 - General Guidelines for Electronic
16、 Equipment (Copies of these documents are available online at https:/assist.dla.mil/quicksearch/ or https:/www.assist.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building. 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a p
17、art of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM-E-595 - Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a V
18、acuum Environment. (DoD adopted) (Copies of these documents are available online at http:/www.astm.org or from ASTM International, P.O. Box C700, 100 Barr Harbor Dr. West Conshohocken, PA 19428.) TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA/EIA-455 - Standard Test Procedure for Fiber Optic Fibers, Ca
19、bles, Transducers, Sensors, Connecting and Terminating Devices, and Other Fiber Optic Components. (DoD adopted) TIA-455-13 - Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assemblies. (DoD adopted) TIA/EIA-455-20 Measurement of Change in Optical Transmittance. (DoD adopted)
20、 TIA-455-28 - Method For Measuring Tensile Failure Point of Optical Waveguide Fibers. (DoD adopted) TIA-455-31 - Proof Testing Optical Fibers by Tension. (DoD adopted) TIA-455-58 - Core Diameter Measurement of Graded-Index Optical Fibers. (DoD adopted) TIA-455-62 - Measurement of Optical Fiber Macro
21、bend Attenuation. (DoD adopted) TIA/EIA-455-64 - Procedure for Measuring Radiation-Induced Attenuation in Optical Fibers and Optical Cables TIA-455-71 - Procedure to Measure Temperature-Shock Effects on Fiber Optic Components. Provided by IHSNot for ResaleNo reproduction or networking permitted with
22、out license from IHS-,-,-MIL-PRF-49291D 4 TIA-455-74 - FOTP-74 IEC-60793-1-53 Optical Fibres Part 1-53: Measurement Methods and Test Procedures Water Immersion TIA-455-78 - Part 1-40: Measurement Methods and Test Procedures - Attenuation. TIA-455-80 - Cutoff Wavelength of Uncabled Single-Mode Fiber
23、by Transmitted Power. (DoD adopted) TIA/EIA-455-132 - Measurement of the Effective Area of Single-Mode Optical Fiber. TIA-455-133 - FOTP-133 IEC-60793-1-22 Optical Fibres Part 1-22: Measurement Methods and Test Procedures Length Measurement TIA-455-167 - Mode Field Diameter Method in the Far-Field.
24、(DoD adopted) TIA-455-175 - Chromatic Dispersion Measurement of Single-Mode Optical Fibers by the Differential Phase Shift Method. (DoD adopted) TIA-455-176 - Method for Measuring Optical Fiber Cross-Sectional Geometry by Automated Grey-Scale Analysis. (DoD adopted) TIA/EIA-455-177 - Numerical Apert
25、ure Measurement of Graded-Index Optical Fibers. (DoD adopted) TIA-455-178 - Measurements of Strip Force for Mechanically Removing Coatings from Optical Fibers. (DoD adopted) TIA-455-195 - FOTP-195 IEC-60793-1-21 Optical Fibres Part 1-21: Measurement Methods and Test Procedures Coating Geometry . TIA
26、/EIA-455-204 - Measurement of Bandwidth on Multimode. TIA-455-220 - Differential Mode Delay Measurement of Multimode Fiber in the Time Domain (Copies of these documents are available online at http:/www.tiaonline.org or from the Telecommunications Industry Association/Electronic Industries Associati
27、on, 2500 Wilson Boulevard, Suite 300, Arlington, Virginia 22201-3836.) NATIONAL AERONAUTICAL AND SPACE ADMINISTRATION (NASA) NHB 8060.1 - Flammability, Odor, Offgassing, and Compatibility Requirements and Test Procedures for Materials in Environments that Support Combustion. (Copies of these documen
28、ts are available online at https:/nepp.nasa.gov/ or from the Office of Safety and Mission Quality, (code QR), NASA, Headquarters, Washington, DC 20546.) NCSL INTERNATIONAL NCSL Z540.3 - Requirements for the Calibration of Measuring and Test Equipment (Copies of this document are available online at
29、http:/www.ncsli.org/ or from National Conference of Standards Laboratories, 2995 Wilderness Place, Suite 107, Boulder, CO 80301.) (Non-Government standards and other publications are normally available from the organizations which prepare or which distribute the documents. These documents also may b
30、e available in or through libraries or other informational services.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated specifications or specification sheets), the text of this document takes preceden
31、ce. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291D 5 3. REQUIREMENTS 3.1 Specification sheets. The individual
32、 item requirements for optical fibers shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 Qualification. Optical fibers furnished
33、under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.5 and 6.3). 3.3 Verification requirements. The verification requirements of the optical fibers furnished under this specificati
34、on shall be established and maintained in accordance with the procedures and requirements specified in MIL-STD-790 with details specified in 4.1. 3.4 Materials (see 4.7.2.1.9). The fiber shall be constructed of materials as specified (see 3.1). Materials selected for fiber manufacture shall be of a
35、type and quality to assure compliance with the requirements of this specification, and shall be physically and chemically compatible for their intended use throughout the intended lifetime. All materials used shall be nonconductive unless otherwise specified (see 3.1) and non-nutrient to fungus. Whe
36、re new and questionable material is being considered for use, the contractor shall furnish the toxicological data required to evaluate the safety of the material for the proposed use. Materials used in fiber construction shall not emit toxic or explosive fumes when exposed to flame, and shall have n
37、o adverse effect on the health of personnel when used for their intended purpose. 3.4.1 Recovered materials. Unless otherwise specified herein, all materials incorporated in the products covered by this specification shall be new. Products may be fabricated using raw materials produced from recovere
38、d bulk materials to the extent practicable if the intended use of the product is not jeopardized. The term “recovered material“ means materials which have been collected or recovered from solid waste and reprocessed to become part of a source of raw materials, as opposed to virgin raw materials. Non
39、e of the above shall be interpreted to mean that the use of partially processed, assembled, used or rebuilt products are allowed under this specification. 3.4.2 Materials for space applications. When specified, materials used in space flight applications shall meet the following additional material
40、requirements. 3.4.2.1 Thermal vacuum outgassing. When specified, and tested in accordance with 4.7.2.5.1, all non-metallic materials shall not exhibit greater than 1.0 percent total mass loss and shall not produce greater than 0.1 percent collected volatile condensable materials. 3.4.2.2 Odor. When
41、specified, and tested in accordance with 4.7.2.5.2, non-metallic materials shall rate not greater than 2.5. 3.4.2.3 Toxicity. When specified, and tested in accordance with 4.7.2.5.3, all non-metallic materials shall not exceed a total hazard index of 0.5. 3.5 Design and construction (see 4.7.2). The
42、 design, construction, and physical dimensions of the complete fiber shall be as specified herein and in the specification sheet (see 3.1). 3.5.1 Optical fiber. Optical fibers shall be sufficiently free of imperfections, inclusions, and impurities other than dopants, to conform to the specified stre
43、ngth and optical transmission requirements. The optical fiber shall be coated with a suitable material to preserve the high pristine tensile strength of the fiber. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291D 6 3.5.1.1 Splices. Unle
44、ss otherwise specified (see 3.1 and 6.2), the fibers shall be splice-free. When specified, spliced fibers shall meet all dimensional, mechanical, and environmental requirements as unspliced fiber. The coating of spliced fibers shall be reconstituted in such a manner as to not change the diameter of
45、the coating by more than the percentage specified (see 3.1). When specified, splice loss shall be as specified in the applicable specification sheet (see 3.1). 3.5.1.2 Geometry (fiber). The fiber geometry shall be as specified below. 3.5.1.2.1 Core diameter (Type I fiber only). When tested in accord
46、ance with 4.7.2.1.1, the core diameter shall be as specified (see 3.1). 3.5.1.2.2 Mode field diameter (Type II fiber only). When tested in accordance with 4.7.2.1.2, the nominal mode field diameter and mode field diameter tolerance for Type II fiber shall be as specified (see 3.1). 3.5.1.2.3 Core ov
47、ality (core noncircularity) (Type I fiber only). When tested in accordance with 4.7.2.1.3, the core ovality shall be as specified (see 3.1). 3.5.1.2.4 Cladding diameter. When tested in accordance with 4.7.2.1.4, the cladding diameter shall be as specified (see 3.1). 3.5.1.2.5 Cladding ovality (cladd
48、ing noncircularity). When tested in accordance with 4.7.2.1.5, the cladding ovality shall be as specified (see 3.1). 3.5.1.2.6 Core-to-cladding offset (core/cladding concentricity). When tested in accordance with 4.7.2.1.6, the core-to-cladding offset shall be as specified (see 3.1). 3.5.1.2.7 Coati
49、ng diameter. When tested in accordance with 4.7.2.1.7, the coating diameter shall be as specified (see 3.1). 3.5.1.2.8 Overall coating concentricity error. When tested in accordance with 4.7.2.1.8, the overall coating concentricity error shall be as specified (see 3.1). 3.5.1.3 Fiber mass/unit length (kg/km). When tested in accordance with 4.7.2.2, the fiber mass/unit len
