Patent ID: 9581779
Date: 2017-02-28
CPC Classifications: G02B

Claim:
1. A rugged optical micromodule cable comprising: a composite cable jacket having an outer surface, an inner surface defining a channel within the cable jacket and a thickness between the inner surface and the outer surface, the cable jacket comprising: a first cable jacket layer formed from a first material, the first cable jacket layer having an inner portion facing the channel and an outer surface defining an outer surface of the cable; and a second cable jacket layer formed from a second material, the second cable jacket layer having an outer portion in direct contact with and bonded to the inner portion of the first cable jacket layer; wherein the first cable jacket layer is contiguous in a circumferential direction and surrounds the second cable jacket layer; wherein the first cable jacket layer provides at least 10% of the thickness of the cable jacket and the second cable jacket layer provides at least 10% of the thickness of the cable jacket; wherein the first material is different than the second material, and the first material has a first torsional stiffness and the second material has a second torsional stiffness, wherein the second torsional stiffness is greater than the first torsional stiffness; a plurality of micromodules located in the channel, wherein the micromodules each comprise sheathing surrounding a plurality of optical fibers, wherein the sheathing has average thickness of less than 200 micrometers; and a plurality of yarn fibers located within the channel and positioned around the micromodules such that at least one yarn fiber is located radially outside of one of the micromodules.