1、 MIL-PRF-49291/10B 10 July 2013 SUPERSEDING MIL-PRF-49291/10A 22 July 2011 PERFORMANCE SPECIFICATION SHEET FIBER, OPTICAL, TYPE I, CLASS I, SIZE IV, COMPOSITION A, WAVELENGTH B, RADIATION RESISTANT, ENHANCED PERFORMANCE CHARACTERISTICS (METRIC) This specification is approved for use by all Departmen
2、ts and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-49291. 1/ Cladding diameter remains unspecified with condition that optical fiber must meet specified requirements. 2/ Overall dimension inc
3、ludes a non-strippable coating (or surface treatment). Cladding along with this coating shall conform to C diameter. Use C dimension in lieu of cladding to determine cladding ovality, core-to-cladding offset and cladding dimensions. 3/ Integrated fiber and cable manufacturing process may exceed this
4、 diameter. When this condition occurs, then this configuration shall conform to cabling specification in addition to this specification sheet. FIGURE 1. Dimensions and configuration of optical fiber construction. AMSC N/A FSC 6010 PIN Dimensions A (m) B (m) C (m) M49291/10-01 M49291/10-01A 62.5 2.5
5、1/ 125 1 2/ M49291/10-02 M49291/10-02A 62.5 2.5 125 1 245 10 3/ METRIC Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 2 Circle (solid) Diameter (m) Inner 60.0 Second 65.0 Third 124.0 Fourth 126.0 FIGURE 2. Tolerance fields. Part or
6、 identifying number (PIN). (See figure 1 and table II): M49291/10-01 M49291/10-01A M49291/10-02 M49291/10-02A REQUIREMENTS: Dimensions and configuration: Diameter: See figure 1 and figure 2. (Diameter requirements are based on selecting fibers with end-point tolerances of 125 1 m from production wit
7、h a 125 2 m tolerance.) Ovality: Core: 0.75 for a 250 m diameter coating. Fiber curl: Not applicable. Splices within the optical fiber: Splices within the optical fiber are not allowed. Proof test: 1.38 GPa (200 kpsi). Fiber mass/unit length: 0.1 kg/km maximum. Optical parameters: Change in optical
8、transmittance: Measurements to be made at 850 nm 20 nm. Maximum attenuation rate: Spectral attenuation shall be performed at a sufficient number of wavelengths to cover the applicable optical transmission windows and sources for attenuation. Sufficient coverage includes the optical transmission wind
9、ows (850 nm, 1,300 nm), ultraviolet absorption band (600 nm to 870 nm), Rayleigh scattering losses (800 nm to 1,200 nm), OH impurity absorption peaks (945 nm, 1,249 nm, and 1,383 nm). Use of a source and power meter to perform this measurement is not acceptable. Attenuation rate for wavelengths of o
10、peration shall not exceed the maximum values listed below. Maximum attenuation rate over the wavelength range from 800 nm to 1,600 nm shall be less than 4.5 dB/km. Attenuation rate for wavelengths of operation shall not exceed 3.0 dB/km at 850 nm 20 nm and 0.7 dB/km at 1,300 nm 20 nm. Numerical aper
11、ture: 0.275 0.015 at 850 nm 25 nm. Overfill bandwidth: 300 MHz-km at 850 nm 20 nm and 600 MHz-km at 1,300 nm 20 nm. RML/EMBcbandwidth: 385 MHz-km at 850 nm 20 nm and 700 MHz-km at 1,300 nm 20 nm. Chromatic dispersion: Zero dispersion wavelength shall be 1,343 nm 23 nm. The value of the slope at the
12、zero dispersion wavelength shall be not greater than 0.11 ps/nm2-km for a zero dispersion wavelength between 1,320 nm to 1,348 nm and shall not be greater than 0.001 (1,458-zero dispersion wavelength) ps/nm2-km for a zero dispersion wavelength between 1,348 nm to 1,366 nm. Transient attenuation: Tra
13、nsient attenuation shall be 1.5 dB at 1,300 nm when tested in accordance with TIA-455-78. Attenuation uniformity: Applicable except perform at 850 nm and 1,300 nm. There shall be no discontinuities in attenuation along the length greater than 0.2 dB. Macrobend attenuation: Applicable except test sha
14、ll be performed in accordance with TIA-455-62, method B, with optical power measurements obtained for each row of parameters in table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 4 TABLE I. Macrobend attenuation test parameter
15、s. Mandrel diameter mm (inch) Number of turns around mandrel Measurement wavelength (nm) Macrobend attenuation (dB) 76 1 (3.0 .04) 100 1300 20 0.5 76 1 (3.0 .04) 100 850 25 0.5 30 1 (1.2 .04) 10 1,300 20 1.5 30 1 (1.2 .04) 10 850 25 1.5 20 1 (.79 .04) 1 1300 20 2.5 20 1 (.79 .04) 1 850 25 2.5 15 .5
16、(.59 .02) 1 1,300 20 3.5 15 .5 (.59 .02) 1 850 25 3.5 Polarization mode dispersion: Not applicable. ENVIRONMENTAL: Temperature range: See table II. TABLE II. Temperature range. 1/ PIN Operating oC (F) Nonoperating oC (F) Storage oC (F) M49291/10-01 M49291/10-02 2/ -55 to +165 (-67 to 329) -40 to + 8
17、5 (-40 to 185) -40 to +85 (-40 to 185) M49291/10-01A M49291/10-02A 3/ -46 to +85 (-51 to 185) -55 to +85 (-67 to 185) -55 to +85 (-67 to 185) 1/ Temperatures are specified in degrees Centigrade, Fahrenheit equivalents are specified in parentheses. 2/ Temperature ranges in row 2 conform to those spec
18、ified for other MIL-SPEC fiber optic cabling components for aircraft applications. 3/ Temperature ranges in row 3 conform to those specified for other MIL-SPEC fiber optic cabling components for standard applications (such as the telecommunication industry). Provided by IHSNot for ResaleNo reproduct
19、ion or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 5 Fluid immersion aging: Not applicable. Mechanical strippability: Applicable with the following diameter and residue requirements and test methods: Diameter requirement. Requirement that the stripped optical fiber complies w
20、ith diameter B in figure 1 shall be verified by successful insertion and removal of each optical fiber stripped end into a ring gauge/die/ferrule with a hole diameter of 125 +1/-0 micron. It is in the interest of the implementer to choose a gauge closer to 126 micron than 125 microns. Residual requi
21、rement. Requirement that no residual coating material remains on fiber shall be verified by the performance of a fiber pullout test. The end of each stripped length of optical fiber shall be terminated onto the end of a MIL-PRF-29504 terminus (or other suitable fiber optic connector if approved by t
22、he Qualifying Activity prior to test sample fabrication). Fabrication shall be performed as specified in NAVSEA Drawing 8283255. A copy of this document can be obtained at web site: https:/fiberoptics.nswc.navy.mil/ in the NAVSEA Drawing section under Component Information. The fiber pull out force
23、shall be tested by applying a 14.0 N (3.1 pounds) axial tensile load between the optical fiber and the terminus for a minimum duration of one minute. At the completion of the test, the optical fiber shall be visually examined and length measured to verify that no fiber pull out occurred. Splicing co
24、mpatibility: Six 10 meter (32.8 feet) lengths of optical fiber conforming to the requirements of this specification sheet shall be spliced (using either a fusion splicer or mechanically splice) and connectorized (using MIL-PRF-29504/4 and MIL-PRF-29504/5 termini) to optical fiber conforming to MIL-P
25、RF-49291/6. Three sample lengths are to be used for each splice or connector. An insertion loss measurement shall be performed in accordance with method B of TIA/EIA-455-34. The insertion loss shall not exceed 0.2 dB per splice and 0.5 dB per connector mated pair when performed at a wavelength of 1,
26、300 nm. Dynamic tensile strength: Dynamic tensile strength is applicable. Fungus resistance: Fungus resistance is applicable. Thermal shock: Applicable as specified for M49291/10-01A and M49291/10-02A. Applicable for M49291/10-01 and M49291/10-02, except that the temperatures of -55C +0/-5C (-67F +0
27、/-8F) and 165C +5/-0C (329F +8/-0F) shall be used for the low and high soak temperatures, respectively. Test shall be performed in accordance with TIA-455-71, schedule C-0 (5 cycles). The change in optical transmittance shall be measured during (towards the end of each soak temperature) and after th
28、e test. Storage temperature: Storage temperature in applicable. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 6 Temperature cycling: Applicable as specified for M49291/10-01A and M49291/10-02A. Applicable for M49291/11-01 and M492
29、91/11-02 except for the optical fiber with a -55C to 165C (-67F to 329F) temperature range, perform the following in lieu of the specified temperature cycling test. Optical fiber shall be tested in accordance with TIA-455-3 using the setup and procedure specified in Measurement 3301 of MIL-STD-1678-
30、3 with the temperature profile in table 3301-II. The change in optical transmittance shall be measured during and after the test. At a minimum for the “during test” measurements, an optical transmittance measurement shall be performed towards the end of each soak period (maintain step) after every 5
31、0 cycles. A post test visual examination of the test specimens shall reveal no surface impairment or any damage detrimental to the operation of the test specimens. Test fixtures, if used, must be of minimum mass and approved by the qualifying activity. No other mass (item that causes significant the
32、rmal lag) shall be added inside the chamber. Life aging (temperature life): Applicable as specified for M49291/10-01A and M49291/10-02A. Applicable for M49291/10-01 and M49291/10-02 except that the high exposure temperature shall be 165C +5/-0C (329F +8/-0F). Test samples shall be tested in accordan
33、ce with TIA/EIA-455-4 for the duration of 1,000 hours at the high exposure temperature. The change in optical transmittance shall be measured after the test. The optical fiber shall be visually examined after the test to the extent feasible. Optical fiber shall not be damaged, and there shall be no
34、distortion, cracking of coating or other damage detrimental to the operation of the optical fiber. The requirement for the change in optical transmittance shall be met after the test. Performance of a cable/fiber retention test is not required as part of the final inspection for this test. Provided
35、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 7 Nuclear radiation resistance: Nuclear radiation resistance requirements and test conditions shall be as shown below and in table III and table IV: Light launch conditions: In accordance with
36、TIA-455-78. Wavelength: 1,300 nm 25 nm. Source type: LED with FWHM spectral width 160 nm. TABLE III. Steady state gamma radiation test conditions. Test temperature (oC) Dose rate Total dose (rad Si) -28 2 25 2 85 2 50 +0, -20 rad (Si)/sec Classified (Some nuclear radiation resistance characteristics
37、 of this optical fiber are classified and shall be obtained from the qualifying activity. Application to receive these requirements must be made through the Department of the Navy, Naval Surface Warfare Center, Dahlgren Division, ATTN: Code B35, 17320 Dahlgren Road, Dahlgren, VA 22448-5100. Informat
38、ion concerning security clearance classification and “need to know“ must be detailed in the request.) TABLE IV. Steady state gamma radiation test requirements. Maximum induced attenuation (dB/km) Attenuation at specified recovery time (dB/km) Specified recovery time (sec) 50 1/ 15 at -28C (-18F) 1/
39、5 at 25C(77F) 5 at 85C (185F) 1,000 1/ The radiation induced loss for a given threat. The total dose associate with the threat is classified and not necessarily equal to the test total dose. CONFORMANCE: Test samples for qualification: Reels of optical fiber produced for initial qualification and qu
40、ality conformance shall be from at least two different preforms (see 4.5.1 of MIL-PRF-49291). Qualification: Qualification shall consist of performing testing specified in table V. In group A testing length may be measured using mechanical methods. In group C testing the mechanical strippability tes
41、t may be omitted if the optical fiber coatings have not changed from when the mechanical strippability test was last performed. The manufacturer shall provide a certificate of compliance for mechanical strippability in the group C test report. Provided by IHSNot for ResaleNo reproduction or networki
42、ng permitted without license from IHS-,-,-MIL-PRF-49291/10B 8 TABLE V. Qualification inspections. Test performed Initial qualification Initial uncoiling preparation Group 1 (3 spools-2km each) 1/ Visual and mechanical X OTDR tests: Fiber length X Attenuation uniformity X Parameter tests: Attenuation
43、 rate X Numerical aperture (MM only) X Core diameter (MM only) X Cutoff wavelength(SM only) Mode field diameter (SM only) Transient attenuation (MM only) X Macrobend attenuation X Bandwidth-overfill (MM only) X Bandwidth-RML/EMBc (MM only) X Chromatic dispersion X Polarization mode dispersion (SM on
44、ly) Fiber curl (SM only) Mass/unit length X Geometry tests: End view: Core ovality (MM only) X Cladding diameter X Cladding ovality X Core to cladding offset X Side view: Coating diameter X Coating-cladding concentricity error X Overall coating concentricity ratio X Provided by IHSNot for ResaleNo r
45、eproduction or networking permitted without license from IHS-,-,-MIL-PRF-49291/10B 9 TABLE V. Qualification inspections Continued. Test performed Initial qualification Group 2(samples off 3 spools) 1/ Tensile proof X Mechanical strippability X Dynamic tensile strength X Splice compatibility X Group
46、3(same 3 spools-2km each 1/, 2/, 5/, 6/) Thermal shock 3/ X Storage temperature 4/ X Temperature humidity cycling 4/ X Mechanical strippability (post TH cycling) X Temperature cycling 4/ X Life aging (temperature life) 4/ =daily 7/ X Mechanical strippability (post Temp life) X Group 4(samples off 3
47、spools) Nuclear radiation resistance 4/ X Fungus resistance X Notes: 1/ See table I in basic specification (MIL-PRF-49291) for specimen lengths. 2/ OOT = Change in optical transmittance. Perform in accordance with TIA-455-20 for transmitted power adhering strictly to the setup and test procedure spe
48、cified in Measurement 2102 of MIL-STD-1678-2. 3/ Perform OOT after the test only. 4/ Perform OOT both during and after the test. 5/ Sample lengths: Recommend to prepare before Group 1. For mechanical strippability, place in pans and remove from chamber after specified environmental test. Mechanical strippability: each spool, 2 samples, 91.4 cm (3 ft) long. Mechanical strippability-post temp/humidity: each spool, 2 samples, 91.4 cm (3 ft) long. Mechanical strippability-post life aging: each spool, 2 samples, 91.4 cm (3 ft) long. Dyna
