Fiber to the premise service disconnect via macro-bending loss
It is determined that service is to be disconnected for at least a first subscriber of a video content network employing at least one fiber optic cable. The service to the at least first subscriber is provided from a cross-connect cabinet, over the at least one fiber optic cable, to a premises of the at least first subscriber. Sufficient macro-bending loss is induced in the at least one fiber optic cable so as to cause a signal-to-noise ratio at the premises to degrade such that the service is disconnected. The macro-bending loss is induced in a portion of the at least one fiber optic cable which services only the first subscriber. The macro-bending loss can be induced, for example, by winding about a single mandrel, two mandrels in a figure eight pattern, in a tortuous groove in a tray, and so on.
1. A method comprising the steps of:
determining that service is to be disconnected for at least a first subscriber of a video content network employing at least one fiber optic cable, said service to said at least first subscriber being provided from a cross-connect cabinet, over said at least one fiber optic cable, to a premises of said at least first subscriber; and
deliberately inducing sufficient macro-bending loss in said at least one fiber optic cable so as to cause a signal-to-noise ratio at said premises to degrade such that said service is disconnected;
wherein, in said inducing step, said macro-bending loss is induced in a portion of said at least one fiber optic cable which services only said first subscriber.
2. The method of claim 1 , wherein, in said inducing step, said at least one fiber optic cable comprises a single mode fiber optic cable.
3. The method of claim 2 , wherein said service provided over said at least one fiber optic cable in which said macro-bending loss is deliberately induced comprises at least a cable television service.
4. The method of claim 3 , wherein said inducing comprises winding said fiber optic cable a predetermined number of turns about at least one mandrel having a radius, said predetermined number of turns and said radius being selected to induce said sufficient macro-bending loss.
5. The method of claim 3 , wherein said inducing comprises winding said fiber optic cable a predetermined number of times, in a figure-eight pattern, about at least two mandrels having predetermined radii and a predetermined distance therebetween, said predetermined number of times, said radii, and said predetermined distance being selected to induce said sufficient macro-bending loss.
6. The method of claim 3 , wherein said inducing comprises retaining said fiber optic cable in a tortuous groove in a tray, said tortuous groove being configured and dimensioned to induce said sufficient macro-bending loss.
7. The method of claim 3 , further comprising:
determining that said service which was disconnected is to be re-connected; and
deliberately removing said sufficient macro-bending loss in said at least one fiber optic cable so as to cause said signal-to-noise ratio at said premises to be sufficiently strong such that said service is re-connected.
8. The method of claim 7 , wherein said removing comprises winding said at least one fiber optic cable about a path having a greater effective radius than under disconnected conditions.
9. The method of claim 3 , wherein:
said determining step comprises determining that said service is to be disconnected for at least one wavelength, but not all wavelengths, carried by said at least one fiber optic cable; and
said inducing step comprises bending said cable a predetermined amount at a predetermined effective radius so as to cause said signal-to-noise ratio at said premises to degrade such that said service is disconnected for said at least one wavelength, but not for all said wavelengths carried by said at least one fiber optic cable.
10. A kit of parts for service disconnect of a service provided over at least one fiber optic cable, comprising:
a tray structure having at least one of:
at least a first mandrel projecting therefrom, said at least first mandrel being configured and dimensioned to effectuate the service disconnect via sufficient macro-bending loss in the at least one fiber optic cable; and
a tray having a tortuous groove therein, said tortuous groove being configured and dimensioned to induce said sufficient macro-bending loss;
a cover securable to said tray structure so as to retain the at least one fiber optic cable in relation to said at least one of said at least first mandrel and said tortuous groove; and
a set of instructions directing a user of said kit to carry out at least one of winding the at least one fiber optic cable about said at least first mandrel, and locating the at least one fiber optic cable in the tortuous groove, so as to induce the sufficient macro-bending loss to effectuate the service disconnect.
11. The kit of claim 10 , wherein said at least first mandrel has a radius, and wherein said instructions instruct the user to wind the at least one fiber optic cable a predetermined number of turns about said at least first mandrel, said predetermined number of turns and said radius being selected to induce the sufficient macro-bending loss.
12. The kit of claim 10 , wherein said at least first mandrel further comprises at least a second mandrel, and wherein said instructions instruct the user to wind the at least one fiber optic cable a predetermined number of times, in a figure-eight pattern, about said at least first and second mandrels, said at least first and second mandrels having predetermined radii and a predetermined distance therebetween, said predetermined number of times, said radii, and said predetermined distance being selected to induce the sufficient macro-bending loss.
13. The kit of claim 10 , wherein said instructions further instruct the user to deliberately remove the sufficient macro-bending loss in said at least one fiber optic cable so as to cause the service to be re-connected by reducing the sufficient macro-bending loss.
14. An apparatus comprising:
at least one fiber optic cable;
a tray structure having at least one of:
at least a first mandrel projecting therefrom, said at least first mandrel being configured and dimensioned to effectuate service disconnect for a service provided over said at least one fiber optic cable via inducing sufficient macro-bending loss in said at least one fiber optic cable; and
a tray having a tortuous groove therein, said tortuous groove being configured and dimensioned to induce said sufficient macro-bending loss; and
a cover secured to said tray structure so as to retain said at least one fiber optic cable in relation to at least one of said at least first mandrel and said tortuous groove;
wherein said at least one fiber optic cable is at least one of:
wound about said at least first mandrel so as to induce said sufficient macro-bending loss to effectuate said service disconnect; and
located in said tortuous groove so as to induce said sufficient macro-bending loss to effectuate said service disconnect.
15. The apparatus of claim 14 , wherein said at least first mandrel has a radius, and wherein said at least one fiber optic cable is wound a predetermined number of turns about said at least first mandrel, said predetermined number of turns and said radius being selected to induce said sufficient macro-bending loss.
16. The apparatus of claim 14 , wherein said at least first mandrel further comprises at least a second mandrel, and said at least one fiber optic cable is wound a predetermined number of times, in a figure-eight pattern, about said at least first and second mandrels, said at least first and second mandrels having predetermined radii and a predetermined distance therebetween, said predetermined number of times, said radii, and said predetermined distance being selected to induce said sufficient macro-bending loss.
17. The apparatus of claim 14 , further comprising an alternative path for said at least one fiber optic cable to effectuate a re-connection of said service, said alternative path having a greater effective radius than under disconnected conditions, in order to cause said service to be re-connected by reducing said sufficient macro-bending loss.
18. The apparatus of claim 17 , wherein said at least first mandrel has a radius, and wherein said alternative path comprises at least a second mandrel having a larger radius than that of said at least first mandrel, said larger radius being selected to reduce said sufficient macro-bending loss and restore said service.
19. The apparatus of claim 17 , wherein said at least first mandrel further comprises at least second and third mandrels, and wherein said alternative path comprises wrapping said at least one fiber optic cable about said first, second, and third mandrels to achieve said greater effective radius.
20. A video content network, comprising:
a head end;
a cross-connect cabinet coupled to said head end;
a plurality of macro-bending service disconnect apparatuses located at said cross-connect cabinet; and
a plurality of consumer premises terminals coupled to said head end through said plurality of macro-bending service disconnect apparatuses, said plurality of consumer premises terminals being coupled to said plurality of macro-bending service disconnect apparatuses by single strands of optical fiber cable;
wherein said plurality of macro-bending service disconnect apparatuses each comprise at least one structural member configured to deliberately induce sufficient macro-bending loss in a corresponding one of said single strands of fiber optic cable so as to cause a signal-to-noise ratio at a corresponding one of said consumer premises terminals to degrade such that service thereto is disconnected; and
wherein said service provided over said corresponding one of said single strands of fiber optic cable in which said macro-bending loss is deliberately induced comprises at least a cable television service.
21. The video content network of claim 20 , wherein said at least one structural member comprises at least a first mandrel having a radius and wherein said corresponding one of said single strands of fiber optic cable is wound about said at least first mandrel a predetermined number of turns, said predetermined number of turns and said radius being selected to induce said sufficient macro-bending loss.
22. The video content network of claim 20 , wherein said at least one structural member comprises at least first and second mandrels having radii and a predetermined distance therebetween and wherein said corresponding one of said single strands of fiber optic cable is wound about said at least first and second mandrels a predetermined number of times, in a figure-eight pattern, said predetermined number of times, said radii, and said predetermined distance being selected to induce said sufficient macro-bending loss.
23. The video content network of claim 20 , wherein said plurality of macro-bending service disconnect apparatuses each further comprise an alternative path for corresponding ones of said single strands of fiber optic cable to effectuate service re-connection, said alternative paths having a greater effective radius than under disconnected conditions, in order to cause said service re-connection by reducing said sufficient macro-bending loss so as to cause said signal-to-noise ratio at corresponding ones of said consumer premises terminals to be sufficiently strong such that said service is re-connected.
24. The video content network of claim 20 , wherein said macro-bending loss is induced such that said service is to be disconnected for at least one wavelength, but not all wavelengths, carried by a corresponding one of said single strands of fiber optic cable.
25. The video content network of claim 20 , wherein said at least one structural member comprises a tray having a tortuous groove therein, said tortuous groove being configured and dimensioned to induce said sufficient macro-bending loss, said corresponding one of said single strands of fiber optic cable being retained in said tortuous groove.