# US 2019/0170957 A1 · Traceable fiber optic cable assembly with indication of polarity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170957 A1 - Document ID: US20190170957A1 - Status: Published application - Kind: A1 - Application number: 16/151,884 - Filed: 2018-10-04 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Corning Research & Development Corporation - Applicants: Corning Research & Development Corporation - Inventors: Douglas Llewellyn Butler; Adam Kent Collier; Patrick Michael Gargano; Ashley Wesley Jones; Jason Clay Lail; Radawan Ripumaree; Hieu Vinh Tran - Web page: https://patentgrep.com/patent/US20190170957A1 ## CPC - G02B 6/562: {locatable, e.g. using magnetic means} - G02B 6/3878: {comprising a plurality of ferrules, branching and break-out means} - G02B 6/38875: {Protection from bending or twisting} - G02B 6/3888: {Protection from over-extension or over-compression} - G02B 6/3893: {Push-pull type, e.g. snap-in, push-on} - G02B 6/44524: {with frame parts or auxiliary devices mounted on the frame and collectively not covering a whole width of the frame or rack (cassettes G02B6/4453)} - G02B 6/44528: {Patch-cords; Connector arrangements in the system or in the box (routing arrangements H04Q1/00)} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Disclosed herein is a traceable fiber optic cable assembly with indication of polarity. In particular, the traceable fiber optic cable assembly includes a traceable fiber optic cable, a first duplex connector at a first end of the fiber optic cable, and a second duplex connector at a second end of the fiber optic cable. A first tracing end of the tracing optical fiber is in a preconfigured orientation in the first duplex connector offset from a central axis of the first duplex connector, and a second tracing end of the tracing optical fiber is in a preconfigured orientation in the second duplex connector offset from a central axis of the second duplex connector. The tracing optical fiber receives an optical tracing signal for propagation to the second tracing end of the first tracing optical fiber to indicate a first orientation of the first duplex connector corresponding to a first polarity state of the traceable fiber optic cable assembly. ## Claims ### Claim 1 A traceable fiber optic cable assembly, comprising: a traceable fiber optic cable comprising: a first data transmission element comprising a first data end and a second data end; a second data transmission element comprising a first data end and a second data end; and a tracing optical fiber comprising a first tracing end and a second tracing end; a first duplex connector at a first end of the traceable fiber optic cable, the first duplex connector comprising a first housing defining a first interior, a first transmit simplex connector at least partially within the first interior of the first housing and comprising the first data end of the first data transmission element, and a first receive simplex connector at least partially within the first interior of the first housing and comprising the first data end of the second data transmission element, the first housing defining a first tracing opening, the first tracing opening in a preconfigured orientation relative to the first transmit simplex connector; and a second duplex connector at a second end of the traceable fiber optic cable, the second duplex connector comprising a second housing defining a second interior, a second transmit simplex connector at least partially within the second interior of the second housing and comprising the second data end of the first data transmission element, and a second receive simplex connector at least partially within the second interior of the second housing and comprising the second data end of the second data transmission element; wherein the first tracing end of the tracing optical fiber is within the first tracing opening of the first housing of the first duplex connector and the second tracing end of the tracing optical fiber is within the second housing of the second duplex connector; wherein the first tracing end is accessible from an exterior of the first housing for propagating an optical tracing signal to the second tracing end of the tracing optical fiber for determining an orientation of the first duplex connector corresponding to a first polarity state of the traceable fiber optic cable assembly. ### Claim 2 (depends on 1) The traceable fiber optic cable assembly of claim 1, wherein the first tracing opening is positioned proximate the first transmit simplex connector. ### Claim 3 (depends on 1) The traceable fiber optic cable assembly of claim 1, wherein the second housing of the second duplex connector further comprises a second tracing opening, the second tracing end of the tracing optical fiber positioned in the second tracing opening and accessible from an exterior of the second housing. ### Claim 4 (depends on 3) The traceable fiber optic cable assembly of claim 3, wherein the second tracing opening is positioned proximate the second transmit simplex connector. ### Claim 5 (depends on 3) The traceable fiber optic cable assembly of claim 3, wherein the second tracing opening is positioned proximate the second receive simplex connector. ### Claim 6 (depends on 1) The traceable fiber optic cable assembly of claim 1, wherein the first housing of the first duplex connector further comprises: a first fiber channel extending from the first tracing opening to the first interior and comprising at least a portion of the tracing optical fiber; and a first post in the first interior proximate the fiber channel, the first post comprising a first contact surface to prevent the tracing optical fiber from exceeding a critical bend radius. ### Claim 7 (depends on 3) The traceable fiber optic cable assembly of claim 3, wherein the second housing of the second duplex connector further comprises: a fiber channel extending from the second tracing opening to the second interior and comprising at least another portion of the tracing optical fiber; and a second post in the second interior proximate the second fiber channel, the second post comprising a second contact surface to prevent the tracing optical fiber from exceeding a critical bend radius. ### Claim 8 (depends on 1) The traceable fiber optic cable assembly of claim 1, wherein at least a portion of the first duplex connector comprises a first translucent material. ### Claim 9 (depends on 8) The traceable fiber optic cable assembly of claim 8, wherein at least a portion of the second duplex connector comprises a second translucent material. ### Claim 10 A method for determining polarity of a traceable fiber optic cable assembly, comprising: transmitting an optical tracing signal into a first duplex connector at a first end of a traceable fiber optic cable of a traceable fiber optic cable assembly, the optical tracing signal transmitted to at least one of: (i) a first tracing end of a tracing optical fiber in a first tracing opening of a first housing of the first duplex connector for propagation through the tracing optical fiber to a second tracing end of the tracing optical fiber in a second duplex connector at a second end of the traceable fiber optic cable, the first tracing opening in a preconfigured orientation relative to a first transmit simplex connector of the first duplex connector; and (ii) a first unfilled opening of the first housing of the first duplex connector; and determining an orientation of the first duplex connector corresponding to a first polarity state of the traceable fiber optic cable assembly by visually observing whether the optical tracing signal emits from a second housing of the second duplex connector. ### Claim 11 (depends on 10) The method of claim 10, wherein the first tracing opening is positioned proximate the first transmit simplex connector. ### Claim 12 (depends on 10) The method of claim 10, wherein at least a portion of the first duplex connector comprises a first translucent material. ### Claim 13 (depends on 10) The method of claim 10, wherein at least a portion of the second duplex connector comprises a second translucent material. ### Claim 14 (depends on 10) The method of claim 10, wherein transmitting the optical tracing signal into the first duplex connector comprises transmitting the optical tracing signal through the first unfilled opening of the first housing of the first duplex connector. ### Claim 15 (depends on 14) The method of claim 14, wherein determining the polarity orientation of the first duplex connector comprises determining the polarity orientation of the first duplex connector by visually observing the optical tracing signal not being emitting from the second housing of the second duplex connector. ### Claim 16 A traceable fiber optic cable assembly, comprising: a traceable fiber optic cable comprising at least one data transmission element and a tracing optical fiber comprising a first tracing end and a second tracing end; a first transmit connector at a first end of the traceable fiber optic cable; a first receive connector at the first end of the traceable fiber optic cable; a second transmit connector at a second end of the traceable fiber optic cable; and a second receive connector at the second end of the traceable fiber optic cable; wherein the first tracing end of the tracing optical fiber is proximate the first transmit connector at the first end of the traceable fiber optic cable and the second tracing end of the tracing optical fiber is proximate the second receive connector at the second end of the traceable fiber optic cable; and wherein the first tracing optical fiber is configured to receive a optical tracing signal at the first tracing end for propagation of the optical tracing signal through the tracing optical fiber to the second tracing end of the tracing optical fiber to indicate a polarity orientation of the first transmit connector and the first receive connector. ### Claim 17 (depends on 16) The traceable fiber optic cable assembly of claim 16, further comprising a first duplex connector comprising the first transmit connector and the first receive connector. ### Claim 18 (depends on 17) The traceable fiber optic cable assembly of claim 17, further comprising a second duplex connector comprising the second transmit connector and the second receive connector. ### Claim 19 (depends on 18) The traceable fiber optic cable assembly of claim 18, wherein the first tracing end of the tracing optical fiber is located in a first opening of the first duplex connector, and the first tracing end being accessible from an exterior of the first duplex connector. ### Claim 20 (depends on 19) The traceable fiber optic cable assembly of claim 19, wherein the second tracing end of the tracing optical fiber is located inside an interior of the second duplex connector. ### Claim 21 (depends on 20) The traceable fiber optic cable assembly of claim 20, wherein the tracing optical fiber comprises a bend induced light scattering optical fiber. ### Claim 22 (depends on 21) The traceable fiber optic cable assembly of claim 21, wherein the second tracing end of the tracing optical fiber comprises a bend that is equal to or greater than 90 degrees. ### Claim 23 (depends on 22) The traceable fiber optic cable assembly of claim 22, wherein the second tracing end of the tracing optical fiber is retained around a central hub of a mandrel. ### Claim 24 (depends on 20) The traceable fiber optic cable assembly of claim 20, wherein the first and second duplex connectors comprise an illumination component comprising one or more total internal reflection structures. ### Claim 25 (depends on 24) The traceable fiber optic cable assembly of claim 24, wherein the illumination components of the first and second duplex connectors are located on locking members of the first and second duplex connectors.