Multifiber connector loopback device

Abstract

A multifiber connector loopback device includes a body having a pair of body halves separable from one another. Each body half includes a base wall from which sidewalls and an end wall extend. Each body half includes a pin receivable at a respective opening at an opposing body half, and a latch receivable at a respective tab at the opposing body half. The base wall forms a groove configured to receive a distal end of a fiber optic connector adapter inserted through an open end of the body. The base wall includes a detent wall extending from the base wall and between the sidewalls. A fiber loopback area is formed in the body between the detent wall and the end wall. The sidewalls include a contour positioned along the longitudinal axis between the detent wall and the end wall. The contour extends toward one another sidewalls.

Description

Attorney Docket No.AFLOCA-384-PCTMULTIFIBER CONNECTOR LOOPBACK DEVICEPRIORITY STATEMENT

[0001] The present disclosure claims the benefit of priority to U.S. provisional patent application no. 63 / 714,621, filed on October 31, 2024, titled “MPO Loopback”, the disclosure of which is incorporated by reference herein in its entirety.FIELD

[0002] The present disclosure relates generally to MPO connectors, and more particularly to improved lookback devices for MPO connectors.BACKGROUND

[0003] A loopback is a device used for testing and diagnostics in fiber optic networks. Its function is to redirect the transmitted signals back to the receiving port of the same device, simulating a full optical path for testing purposes. Its uses include transceiver testing, diagnostic testing, system calibration, and fiber network maintenance.

[0004] For testing multiple fiber (e.g., 12f, 24f, or more) multifiber push-on (MPO) connector cables, t pical design practice may utilize an MPO connector loopback to mate with MPO connector cables through an MPO-MPO adapter. However, known loopback devices have a significant and undesirably large quantity of components, which undesirably burdens and encumbers the uses for the loopback device.

[0005] Accordingly, improved loopback devices would be advantageous. Furthermore, loopback devices addressing one or more of the aforementioned deficiencies would be beneficial and advantageous.BRIEF DESCRIPTION

[0006] Aspects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.Atorney Docket No.AFLOCA-384-PCT

[0007] An aspect of the present disclosure is directed to a multifiber connector loopback device including a body having a pair of hermaphroditic body halves separable from one another at respective openings into which pins insert and respective latches at which tabs are received. Each body half includes a base wall from which sidewalls and an end wall extend. The base wall forms a groove configured to receive a distal end of a fiber optic connector adapter inserted through an open end of the body. The base wall includes a detent wall extending from the base wall and extending between the sidewalls. A fiber loopback area is formed in the body between the detent wall and the end wall.

[0008] An aspect of the present disclosure is directed to a multifiber connector loopback device including a body having a pair of body halves extending substantially along a longitudinal axis and separable from one another. The body includes an open end at which a fiber optic connector adapter is received and a closed end positioned opposite of the open end. Each body half includes a base wall from which sidewalls and an end wall extend. The end wall extends between the sidewalls to form the closed end. Each body half includes a pin receivable at a respective opening at an opposing body half, and each body half includes a latch receivable at a respective tab at the opposing body half. The base wall forms a groove configured to receive a distal end of the fiber optic connector adapter inserted through the open end of the body. The base wall includes a detent wall extending from the base wall and between sidewalls. A fiber loopback area is formed in the body between the detent wall and the end wall. The sidewalls have a contour positioned along the longitudinal axis between the detent wall and the end wall, the contour extending toward one another sidewalls.

[0009] These and other features, aspects and advantages of the present invention will become beter understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.Attorney Docket No.AFLOCA-384-PCTBRIEF DESCRIPTION OF THE DRAWINGS

[0010] A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures.

[0011] Fig. 1 provides a perspective view of an exemplary' embodiment of a multifiber loopback device, including a dust cap attached thereto, in accordance with aspects of the present disclosure;

[0012] Fig. 2 provides an exploded view of the embodiment of the loopback device in accordance with aspects of the present disclosure;

[0013] Fig. 3 provides a top / bottom plan view of the loopback device in accordance with aspects of the present disclosure;

[0014] Fig. 4 provides a side view of the loopback device, including the dust cap attached thereto, in accordance with aspects of the present disclosure;

[0015] Fig. 5 provides an end view of the loopback device of Fig. 4 in accordance with aspects of the present disclosure;

[0016] Fig. 6 provides a side view of the loopback device in accordance with aspects of the present disclosure;

[0017] Fig. 7 provides an end view of the loopback device of Fig. 6 in accordance with aspects of the present disclosure;

[0018] Fig. 8 provides a side cross-sectional view of an exemplary embodiment of the loopback device in accordance with aspects of the present disclosure; and

[0019] Fig. 9 provides a plan view toward an interior of an embodiment of a body half of the loopback device in accordance with aspects of the present disclosure.

[0020] Use of the same of similar reference numerals in the figures denotes the same or similar features unless the context indicates otherwise.DETAILED DESCRIPTION

[0021] Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope orAtorney Docket No.AFLOCA-384-PCT spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0022] As used herein, the terms “first,” “second,” and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. The terms “includes” and “including” are intended to be inclusive in a manner similar to the term “comprising.” Similarly, the term “or” is generally intended to be inclusive (i.e., “A or B” is intended to mean “A or B or both”). In addition, here and throughout the specification and claims, range limitations may be combined and / or interchanged. Such ranges are identified and include all the sub-ranges contained therein unless context or language indicates otherwise. For example, all ranges disclosed herein are inclusive of the endpoints, and the endpoints are independently combinable with each other. The singular forms “a.” “an.” and “the” include plural references unless the context clearly dictates otherwise.

[0023] Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “generally,” “about,” “approximately,” and “substantially,” are not to be limited to the precise value specified. In at least some instances, the approximating language may correspond to the precision of an instrument for measuring the value, or the precision of the methods or machines for constructing or manufacturing the components and / or systems. For example, the approximating language may refer to being within a 10 percent margin, i.e., including values within ten percent greater or less than the stated value. In this regard, for example, when used in the context of an angle or direction, such terms include within ten degrees greater or less than the stated angle or direction, e.g., “generally vertical” includes forming an angle of up to ten degrees in any direction, e.g., clockwise, or counterclockwise, with the vertical direction V.

[0024] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” In addition, references to “an embodiment” or “oneAtorney Docket No.AFLOCA-384-PCT embodiment” does not necessarily refer to the same embodiment, although it may. Any implementation described herein as “exemplary” or “an embodiment” is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0025] Referring now to the drawings. Figs. 1 -9 provide views of an exemplary embodiment if a multifiber connector loopback device 100 in accordance with aspects of the present disclosure. The loopback device 100 includes a body 110 having a pair of body halves 110 A, HOB extending substantially along a longitudinal axis Lo and separable from one another. The body 110 forms a first end forming an open end 111 at which a fiber optic connector adapter 200 is received, such as a multifiber push-on connector adapter. The body 110 forms a second end forming a closed end 112 opposite of the open end 111 (e.g., opposite along the longitudinal axis Lo).

[0026] Each body half 110A, 110B includes a base wall 114. Sidewalls 116 and an end wall 1 18 extend from the base wall 114. The end wall 118 extends between the sidewalls 116 to form the closed end 112. For instance, sidewalls 116 extend substantially along the longitudinal axis Lo and are separated from one another along a transverse axis T perpendicular to the longitudinal axis Lo. The end wall 118 extends substantially along the transverse axis T between sidewalls 116 and forms the closed end 112 opposite of the open end 111.

[0027] In various embodiments, the pair of body halves 110A, HOB are identical to one another. Each body half 110A, 110B may form portions of a hermaphroditic casing each having an opening and respective insertable member, such as forming a selectively connectable snap ataching the body halves 110A, 110B to one another. Each body half 110A, HOB includes a pin 120 receivable at a respective opening 122 at an opposing body half. For instance, each body half 110A, HOB includes the pinAtorney Docket No.AFLOCA-384-PCT120 extending from the sidewall 116 toward the respective opening 122 at the sidewall 116 of the opposing body half. In various embodiments, the pin 120 and opening 122 extend substantially along a transverse axis T from the sidewall 116. Pm 120 at body half 110A is insertable into a corresponding transversely-separated opening 122 at body half HOB. Pin 120 at body half 110B is insertable into a corresponding transversely-separated opening 122 at body half 110A.

[0028] In still various embodiments, each body half 110A, HOB includes a latch 124 receivable at a respective tab 126 at the opposing body half. For instance, each body half 110A, HOB includes the latch 124 positioned at the sidewall 116 and receivable at the respective tab 126 at the sidewall 116 of the opposing body half 110A, HOB. In various embodiments, the tab 126 extends substantially along a lateral axis L from the sidewall 116, such as outward along the lateral axis L from an exterior surface 117 of the sidewall 116. Latch 124 at body half 110A is connectable onto tab 126 at body half 110B. Latch 124 at body half 110B is connectable onto tab 126 at body half 11 OA.

[0029] The base wall 114 forms a groove 130 configured to receive a distal end 202 of the connector adapter 200 inserted through the open end 111 of the body 110. The base wall 114 includes a detent wall 132 extending from the base wall 114 and between sidewalls 116. Referring to Fig. 8, a fiber loopback area 140 is formed in the body 110 (e.g.. between the body halves 110A, 110B. such as between base walls 114 thereof) between the detent wall 132 and the end wall 1 18. The fiber loopback area 140 forms a volume at which loopback fibers 230 extending from an adapter ferrule 240 are positioned, such as from along the transverse axis T and onto the base wall 114. In the embodiments depicted, loopback fibers 230 complete an optical circuit within the fiber loopback area 140, such as maybe utilized for testing and diagnostics. The fiber loopback area 140 along the longitudinal axis Lo, lateral axis L, and transverse axis T are formed to permit the fiber bundle to loop back to the ferrule 240 without macrobend losses.

[0030] The connector adapter 200 includes a main body 210 at which a dust cap 300 is receivable into a connector opening 201 opposite along the longitudinal axis Lo from the distal end 202. The distal end 202 of the connector adapter 200 includes adapter ferrule snap arms 220 extending from the main body 210. When the connectorAtorney Docket No.AFLOCA-384-PCT adapter 200 is inserted through the open end 111 of the body 110, the snap arms 220 abut the detent wall 130 and the base wall 114 at the groove 132.

[0031] The adapter ferrule 240 is secured at the connector adapter 200 between snap arms 220 extending from the main body 210. The snap arms 220 extend substantially along the longitudinal axis Lo and form a volume within which the adapter ferrule 240 is received and retained by the snap arms 220. The distal end 202 of the connector adapter 200 at the snap arms 220 abuts the detent wall 130. The snap arms 220 are secured between body halves 110A, 110B, such as between base walls 114 thereof. The groove 130 may promote retaining the connector adapter 200 within the body 110 and inhibiting movement of the connector adapter 200 out of the body 110 through the open end 111.

[0032] In various embodiments, such as depicted in further detail in Figs. 3-7, the body 110 of the loopback device 100 extends along the transverse axis T and the lateral axis L no greater than a corresponding extension of the main body 210 of the connector adapter 200. For instance, Fig. 5 and Fig. 7 provide, respectively, end views of Fig. 4 and Fig. 6. As provided in Figs. 4 and 6, body 110 at the open end 111 abuts the main body 210 of the connector adapter 200 along the longitudinal axis Lo. As depicted in Figs. 5 and 7, sidewalls 116 and base walls 114 of body 110 extend within a dimension corresponding to a cross-sectional area of the main body 210 of the connector adapter 200 and dust cap 300.

[0033] As depicted in further detail in Fig. 3, in various embodiments, the sidewalls 116 include a contour 119 positioned along the longitudinal axis Lo between the detent wall 132 and the end wall 118. The contour 119 extends toward one another 116 sidewalls, such as inward along the lateral axis L. Contour 119 may further be positioned between a pair of latch 124 and tab 126 interfaces separated from one another along the longitudinal axis Lo. The contour 119 may correspond along the longitudinal axis Lo to the fiber loopback area 140 formed in the body 110.

[0034] In some embodiments, ajack-style loopback permits the loopback to be directly atached to a cable assembly without requiring an adapter.

[0035] In an exemplary embodiment, the loopback device 100 includes the body 110 forming a hermaphroditic case that snaps in halves 110 A, HOB around the adapter ferrule 240 distal end 202 forming an MT ferrule end of the connector adapterAtorney Docket No.AFLOCA-384-PCT200 forming an MTP-MT adapter. The body halves 110A, HOB including the groove 130 formed into the body walls 114 and bounded by the detent wall 132 to form engagement detentes that engage a laterally -extended channel 222 at the snap arms 220 of the MTP-MT connector adapter 200. Various embodiments of the loopback device 100 may provide a mechanical atachment of the adapter ferrule snap arms 330 that is resistant to twist and axial separating forces.

[0036] In exemplary embodiments, the loopback device 100 includes the body halves 110A, 110B forming two identical halves connectable to one another, such as may reduce part counts, ease the manufacturing process, reduce cost, and simplify testing and diagnostics. The halves 110A, HOB, once installed over the loopback fibers 230 and connector adapter 200 (e.g., at snap arms 220). secure the adapter ferrule 240 between the snap arms 220 of the connector adapter 200 and between base walls 114, sidewalls 116, and detent walls 130 of the body halves 1 10A, 110B.

[0037] In some embodiments, an adhesive may be provided between the snap arms 220 of the base walls 114 and utilized to hold the connector adapter 200 to the body HO. Additionally, or alternatively, adhesive may be utilized to atach the body halves 110A, 110B to the adapter ferrule 240.

[0038] The body halves 110 A, 110B may provide various benefits described herein over unitary bodies that may require pushing fibers through an open end.

[0039] Atachment features described herein, such as the pin 120 and opening 122 interface, the latch 124 and tab 126 interface, or both, may remove a need for a heat shrink wrapped around the loopback device, which may avoid undesired increases in cross-sectional area and geometric profile.

[0040] Further aspects of the subject mater are provided in the following embodiments:

[0041] A multifiber connector loopback device includes a body having a pair of body halves extending substantially along a longitudinal axis and separable from one another. The body includes an open end at which a fiber optic connector adapter is received and a closed end opposite of the open end. Each body half includes a base wall from which sidewalls and an end wall extend. The end wall extends between the sidewalls to form the closed end. Each body half includes a pin receivable at a respective opening at an opposing body half. Each body half includes a latchAttorney Docket No.AFLOCA-384-PCT receivable at a respective tab at the opposing body half. The base wall forms a groove configured to receive a distal end of the fiber optic connector adapter inserted through the open end of the body. The base wall includes a detent wall extending from the base wall and between sidewalls. A fiber loopback area is formed in the body between the detent wall and the end wall. The sidewalls have a contour positioned along the longitudinal axis between the detent wall and the end wall. The contour extends toward one another sidewalls.

[0042] In various embodiments, the pair of body halves are identical to one another.

[0043] In some embodiments, the distal end of the fiber optic connector adapter includes adapter ferrule snap arms abutting the detent wall and the base wall at the groove.

[0044] In various embodiments, the fiber optic connector adapter includes a main body at which a dust cap is receivable. The body of the loopback device extends along a transverse axis and a lateral axis no greater than a corresponding extension of the main body.

[0045] In some embodiments, the body of the loopback device abuts the main body along the longitudinal axis.

[0046] In various embodiments, each body half includes the pin extending from the sidewall toward the respective opening at the sidewall of the opposing body half. In some embodiments, each body half includes the latch positioned at the sidewall and receivable at the respective tab at the sidewall of the opposing body half. In still some embodiments, the pin and opening extend substantially along a transverse axis from the sidewall. In still yet some embodiments, the tab extends substantially along a lateral axis from the sidewall along an exterior surface of the sidewall.

[0047] In various embodiments, the fiber optic connector adapter is configured as a multifiber push-on connector adapter.

[0048] In some embodiments, the fiber optic connector adapter includes a channel extending along a lateral axis at an adapter ferrule snap arm, and wherein the adapter ferrule snap arms at the channel engage the base walls at the groove.

[0049] In various embodiments, the fiber optic connector adapter is configured as an MTP-MT adapter.Atorney Docket No.AFLOCA-384-PCT

[0050] In various embodiments, the distal end of the fiber optic connector adapter includes adapter ferrule snap arms extending from a main body. The adapter ferrule snap arms abut the detent wall and the base wall at the groove. The fiber optic connector adapter includes an adapter ferrule secured between the adapter ferrule snap arms. In some embodiments, the base wall abuts the adapter ferrule snap arms to secure the adapter ferrule in position. In still some embodiments, loopback fibers extend from the adapter ferrule into the fiber loopback area between the body halves.

[0051] A multifiber connector loopback device includes a body having a pair of hermaphroditic body halves separable from one another at respective openings into which pins insert and respective latches at which tabs are received. Each body half includes a base wall from which sidewalls and an end wall extend. The base wall forms a groove configured to receive a distal end of a fiber optic connector adapter inserted through an open end of the body. The base wall includes a detent wall extending from the base wall and extending between the sidewalls. A fiber loopback area is formed in the body between the detent wall and the end wall.

[0052] In various embodiments, a distal end of the fiber optic connector adapter includes adapter ferrule snap arms abuting the detent wall and the base wall at the groove to secure the adapter ferrule in position. The fiber optic connector adapter includes a channel extending along a lateral axis at the adapter ferrule snap arms. The adapter ferrule snap arms at the channel engage the base walls at the groove.

[0053] In some embodiments, the fiber optic connector adapter includes a main body at which a dust cap is receivable. The body of the loopback device extends along a transverse axis and the lateral axis no greater than a corresponding extension of the main body. The body of the multifiber connector loopback device abuts the main body.

[0054] In still some embodiments, each body half includes the pin extending substantially along a transverse axis from the sidewall toward the respective opening at the sidewall of the opposing body half. Each body half includes the latch positioned at the sidewall and receivable at the respective tab extending substantially along a lateral axis from an exterior surface of the sidewall of the opposing body half.Attorney Docket No.AFLOCA-384-PCT

[0055] In various embodiments, the sidewalls have a contour positioned along a longitudinal axis between the detent wall and the end wall. The contour extends toward one another of the sidewalls.

[0056] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims

Attorney Docket No.AFLOCA-384-PCTWHAT IS CLAIMED IS:

1. A multifiber connector loopback device, comprising: a body comprising a pair of body halves extending substantially along a longitudinal axis and separable from one another, the body comprising an open end at which a fiber optic connector adapter is received and a closed end opposite of the open end, wherein each body half comprises a base wall, wherein sidewalls and an end wall extend from the base wall, the end wall extending between the sidewalls to form the closed end, wherein each body half comprises a pin receivable at a respective opening at an opposing body half, and wherein each body half comprises a latch receivable at a respective tab at the opposing body half, wherein the base wall forms a groove configured to receive a distal end of the fiber optic connector adapter inserted through the open end of the body, wherein the base wall comprises a detent w all extending from the base w all and between sidewalls, wherein a fiber loopback area is formed in the body between the detent wall and the end wall, and wherein the sidewalls comprise a contour positioned along the longitudinal axis between the detent wall and the end wall, the contour extending toward one another sidewalls.

2. The multifiber connector loopback device of claim 1, wherein the pair of body halves are identical to one another.

3. The multifiber connector loopback device of claim 1, wherein the distal end of the fiber optic connector adapter comprises adapter ferrule snap arms abutting the detent wall and the base w all at the groove.

4. The multifiber connector loopback device of claim 1, wherein the fiber optic connector adapter comprises a main body at which a dust cap is receivable, and wherein the body of the loopback device extends along a transverse axis and a lateral axis no greater than a corresponding extension of the main body.Atorney Docket No.AFLOCA-384-PCT5. The multifiber connector loopback device of claim 4, wherein the body of the loopback device abuts the main body along the longitudinal axis.

6. The multifiber connector loopback device of claim 1, wherein each body half comprises the pin extending from the sidewall toward the respective opening at the sidewall of the opposing body half.

7. The multifiber connector loopback device of claim 6, wherein each body half comprises the latch positioned at the sidewall and receivable at the respective tab at the sidewall of the opposing body half.

8. The multifiber connector loopback device of claim 7, wherein the pin and opening extend substantially along a transverse axis from the sidewall.

9. The multifiber connector loopback device of claim 8, wherein the tab extends substantially along a lateral axis from the sidewall along an exterior surface of the sidewall.

10. The multifiber connector loopback device of claim 1, wherein the fiber optic connector adapter consists of a multifiber push-on connector adapter.11 The multifiber connector loopback device of claim 1, wherein the fiber optic connector adapter comprises a channel extending along a lateral axis at an adapter ferrule snap arm. and wherein the adapter ferrule snap arms at the channel engage the base walls at the groove.

12. The multifiber connector loopback device of claim 1, wherein the fiber optic connector adapter comprises an MTP-MT adapter.

13. The multifiber connector loopback device of claim 1, wherein the distal end of the fiber optic connector adapter comprises adapter ferrule snap arms extending fromAttorney Docket No.AFLOCA-384-PCT a main body, and wherein the adapter ferrule snap arms abut the detent wall and the base wall at the groove, and wherein the fiber optic connector adapter comprises an adapter ferrule secured between the adapter ferrule snap arms.

14. The multifiber connector loopback device of claim 13, wherein the base wall abuts the adapter ferrule snap arms to secure the adapter ferrule in position.

15. The multifiber connector loopback device of claim 14, wherein loopback fibers extend from the adapter ferrule into the fiber loopback area between the body halves.

16. A multifiber connector loopback device, comprising: a body having a pair of hermaphroditic body halves separable from one another at respective openings into which pins insert and respective latches at which tabs are received, wherein each body half comprises a base wall from which sidewalls and an end wall extend, the base wall forming a groove configured to receive a distal end of a fiber optic connector adapter inserted through an open end of the body, the base wall comprising a detent wall extending from the base wall and extending between the sidewalls, wherein a fiber loopback area is formed in the body between the detent wall and the end wall.

17. The multifiber connector loopback device of claim 16, wherein a distal end of the fiber optic connector adapter comprises adapter ferrule snap arms abutting the detent wall and the base wall at the groove to secure the adapter ferrule in position, the fiber optic connector adapter comprising a channel extending along a lateral axis at the adapter ferrule snap arms, and wherein the adapter ferrule snap arms at the channel engage the base walls at the groove.

18. The multifiber connector loopback device of claim 17, wherein the fiber optic connector adapter comprises a main body at which a dust cap is receivable, and wherein the body of the loopback device extends along a transverse axis and theAttorney Docket No.AFLOCA-384-PCT lateral axis no greater than a corresponding extension of the main body, and wherein the body of the multifiber connector loopback device abuts the main body.

19. The multifiber connector loopback device of claim 16, wherein each body half comprises the pin extending substantially along a transverse axis from the sidewall toward the respective opening at the sidewall of the opposing body half, and wherein each body half comprises the latch positioned at the sidewall and receivable at the respective tab extending substantially along a lateral axis from an exterior surface of the sidewall of the opposing body half.

20. The multifiber connector loopback device of claim 16, wherein the sidewalls comprise a contour positioned along a longitudinal axis between the detent wall and the end wall, the contour extending toward one another of the sidewalls.

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