1、 TIA-604-5-E November 2015FOCIS 5 Fiber Optic Connector Intermateability Standard- Type MPO NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and impr
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20、Type MPO CONTENTS 1 INTRODUCTION 1 2 ADAPTER STANDARD 3 3 PLUG STANDARD 4 4 DEVICE RECEPTACLE STANDARD 7 5 APPLICATIONS 9 6 ANNEX A 28 TIA-604-5-E ii TIA-604-5-E 1 1 Introduction 1.1 Scope FOCIS 5 presents the intermateability standard for connectors with the commercial designation of MPO, and is us
21、ed as an addendum to TIA/EIA-604, Fiber Optic Connector Intermateability Standards. The provisions of TIA/EIA-604 apply to this document. 1.2 Objective Intermateability standards define the minimum physical attributes of mating connector components. Fully dimensioned components are not within the sc
22、ope or intent of FOCIS 5. The requirements of FOCIS 5 have been selected with the objectives of ensuring that any compatible combination of plugs and adapters, or plugs and device receptacles, conforming to the requirements of FOCIS 5 will mechanically intermate, and that intermated connector assemb
23、lies will meet their common level of performance. The common level of performance of an intermated connector assembly is the least demanding set of performance requirements in the separate performance specifications of each of the products in the assembly; see TIA/EIA 604. 1.3 Limitations Realizatio
24、n of the objectives for FOCIS 5 may be limited by the following considerations: 1.3.1 Configuration Options There are configuration options in FOCIS 5 that impose limitations on the combinations of plugs, adapters and device receptacles that should be combined in a connector assembly: Both plugs sho
25、uld have the same number of fiber rows, option m; Both plugs should have the same number of fibers per row, option n; Both plugs should have the same alignment pin/hole diameter range option, option t; Both plugs should have the same angles of contact, option a; For k=1 adapters, mated plugs must be
26、 of the same ferrule orientation, option o; For k=2 adapters, when mating plugs with a=8, one mated plug must have ferrule orientation o=1 and the other plug must have ferrule orientation o=2. Device receptacles with: option a=0 are only compatible with plugs of option a=0 option a=8 are only compat
27、ible with plugs of option a=8 and ferrule orientation option o=1 Each plug in an assembly should have different plug interface, option c. Device receptacles are defined only with option c = 1; Only plugs with option c = 2 should be inserted into a device receptacle. TIA-604-5-E 2 1.3.2 Common Perfor
28、mance The locations of the optical cores, as shown in Figure 3.2.3, are defined, without tolerances, by their true positions. To apply common performance the distribution of the optical cores, as shown in Figure 3.2.3, should be centered on their respective true positions. This standard does not con
29、trol the intrinsic loss that may occur between fibers in a connector assembly. Intrinsic loss between fibers must be added to the basic connector loss. 1.4 Drawing practices To be in compliance with ANSI and ISO Engineering Drawing Practices, the following shall apply: 1. Where a tolerance of form i
30、s not specified, the limits of the dimensions for a feature control the form as well as the size. The combined effects of size and form variations may not exceed the envelope of perfect form at the MMC (maximum material condition). 2. Where interrelated features of size (features shown with a common
31、 axis or center plane) have no geometric tolerance of location or runout specified, the limits of the dimensions for a feature control the location tolerance as well as the size. When the interrelated features are at the MMC, they shall be perfectly located to each other as indicated by the drawing.
32、 3. Where perpendicular features (features shown at right angles) have no geometric tolerance or orientation or runout specified, the limits of the dimensions for a feature control the orientation tolerance as well as the size. When perpendicular features are at the MMC, they shall be perfectly orie
33、nted to each other as indicated by the drawing. 4. As the size of a feature departs from the MMC, variations in form, location and orientation are permissible. TIA-604-5-E 3 2 Adapter standard 2.1 Adapter designation The complete designation for a FOCIS 5 connector adapter is: FOCIS 5 A - k - m wher
34、e: A designates that it is an adapter k defines the keying configuration m defines the mounting configuration 2.2 Adapter requirements FOCIS 5 adapters shall meet the requirements of this section. 2.2.1 Adapter interface dimensions The dimensional requirements for FOCIS 5 adapters are defined in Fig
35、ure 2.2.1. 2.2.2 Adapter keying options Two options have been defined for the adapter keying configuration: k = 1 shown in Figure 2.2.1 k = 2 shown in Figure 2.2.2 2.2.3 Adapter mounting options The only mounting option specified is m = 0. The mounting features for this option are undefined. TIA-604
36、-5-E 4 3 Plug standard 3.1 Plug designation The complete designation for a FOCIS 5 connector plug is: FOCIS 5 P m n - k - a - c t - o where: P designates that it is a plug m is the number of fiber rows n is the number of fibers per row k defines the keying option a is the angle of contact option c d
37、esignates whether the plug interface contains alignment pins or holes t designates the alignment pin/hole diameter range option o designates ferrule orientation relative to key 3.2 Plug requirements FOCIS 5 plugs shall meet the requirements of this section. 3.2.1 Plug interface dimensions The dimens
38、ional requirements for FOCIS 5 plugs are defined in Figure 3.2.1 and Figure 3.2.1a. Ferrule material shall have a modulus of elasticity of less than 25 GPa. 3.2.2 Ferrule extension and contact force The travel of the ferrule relative to the plug body and the spring force on the ferrule are defined i
39、n Figure 3.2.2. 3.2.3 Number of fiber rows options The six values defined for the number of fiber rows are specified in Table 1. Table 1 Number of Fiber Rows Options Fiber rows option Number of fiber rows Maximum number of fibers per plug m = 1 1 12 m = 2 2 24 m = 3 3 36 m = 4 4 48 m = 5 5 60 m = 6
40、6 72 The dimensional requirements for fiber hole positions and alignment pin/hole positions for plugs with values of m from 1 through 6 are defined in Figures 3.2.3a through 3.2.3f respectively. TIA-604-5-E 5 3.2.4 Number of fibers per row options The five values defined for the number of fibers in
41、a single row are specified in Table 2. The number of fibers in the plug is equal to the number of fiber rows (m) times the number of fibers per row (n), or m n. The fiber configurations are shown in Figures 3.2.3a through 3.2.3f. Table 2 Number of Fibers per Row Options Fibers per row option Number
42、of fibers per row n = 4 4 n = 6 6 n = 8 8 n = 10 10 n = 12 12 The dimensional requirements for fiber hole positions and alignment pin/hole positions for plugs with values of n given in Table 2 are defined in Figures 3.2.3a through 3.2.3f. 3.2.5 Plug keying options One keying option for FOCIS 5 plugs
43、 has been defined, k = 1. The k = 1 option is shown in Figure 3.2.1. 3.2.6 Contact angle options The contact angle is the angle between the plane of contact of mating fibers and a plane perpendicular to the optical axis of the plug. Two options have been defined for the contact angle: a = 0, designa
44、tes an angle of 0 a = 8, designates an angle of 8 The dimensional requirements are defined in Figure 3.2.4. 3.2.7 Plug interface options Two options have been defined for the plug interface: c = 1, designates a plug interface that contains alignment pins (shown in Figure 3.2.1). c = 2, designates a
45、plug interface that contains alignment holes. TIA-604-5-E 6 3.2.8 Alignment pin/hole diameter options Alignment pin/hole diameter options for FOCIS 5 plugs are specified in Table 3. Table 3 Alignment Pin/Hole Diameter Range Options Dimensions (mm) Alignment Pin Diameter Alignment Hole Diameter Optio
46、n Minimum Maximum Minimum Maximum t = 1 0.698 0.699 0.699 0.700 t = 2 0.697 0.699 0.699 0.701 Note: Alignment Pin/Hole Diameter Option t = 1 is typically used in single-mode fiber applications, t = 2 for multimode applications. 3.2.9 Ferrule orientation options Three options have been defined for th
47、e ferrule orientation relative to the MPO key: o = 0, designates a ferrule that can be oriented in either direction. Typically this is a ferrule with a contact angle of 0 (i.e. a = 0). o = 1, designates a “down-angled” angled ferrule. It has a contact angle of 8 (i.e. a = 8) oriented such that the M
48、PO key is on the same side as the “flat” portion of the ferrule endface, i.e. the feature assigned dimension T in Figure 3.2.4. o = 2, designates an “up-angled” angled ferrule. It has a contact angle of 8 (i.e. a = 8) oriented such that the MPO key is on the opposite side of the “flat” portion of th
49、e ferrule endface, i.e. the feature assigned dimension T in Figure 3.2.4. The ferrule orientation options are defined in Figure 3.2.4. TIA-604-5-E 7 4 Device receptacle standard 4.1 Device receptacle designation A device receptacle provides an optical connection to a device such as an optical source or detector. It is, in effect, half of an adapter. A receptacle for FOCIS 5 plugs shall be designed to intermate with an option c = 2 plug. The complete designation for a FOCIS 5 device receptacle is: FOCIS 5 R - m n - k - a - c - t where: R
