An optical fibre module comprising an optical fibre holder adapted to allow optical fibres to pass from the inside of the module, to the outside and the optical fibre holder comprising: a furcated tube assembly, a plurality of openings each one of which is sized to receive a front portion of a mounting collar, a rear portion of which extends within the opening of a hollow outer tube which encloses an optical fibre held therein to make an optical fibre cable, wherein the mounting collar comprises the front portion sized to be inserted within the respective opening and is sized to be secured within the opening of the optical holder to prevent the hollow outer tube passing from one side of the optical fibre holder to the other; wherein the fibre optic module further comprises an optical fibre cable held within one of the openings of the optical fibre holder with the optical fibre and the hollow inner tubing passing through the opening, wherein the cable is provided with an inner hollow tubing surrounding the optical fibre, and wherein the hollow outer tube is an outer hollow tubing surrounding the inner hollow tubing, the hollow outer tube held at the mounting collar and the inner hollow tubing and optical fibre contained therein pass through a hollow opening of the mounting collar, wherein the mounting collar is inserted within the opening of the optical fibre holder, wherein the mounting collar is secured with the opening of the optical fibre holder to prevent the hollow outer tube from passing from one side of the optical fibre holder to the other, wherein the optical fibre is adapted to be slideably held in the inner hollow tubing such that excess length of optical fibre resulting from contraction of the inner and outer hollow tubes due to temperature effects held in the optical fibre module, wherein one end of the optical fibre and the outer hollow tube is terminated and constrained at a connector. a furcated tube assembly, a plurality of openings each one of which is sized to receive a front portion of a mounting collar, a rear portion of which extends within the opening of a hollow outer tube which encloses an optical fibre held therein to make an optical fibre cable, wherein the mounting collar comprises the front portion sized to be inserted within the respective opening and is sized to be secured within the opening of the optical holder to prevent the hollow outer tube passing from one side of the optical fibre holder to the other; wherein the fibre optic module further comprises an optical fibre cable held within one of the openings of the optical fibre holder with the optical fibre and the hollow inner tubing passing through the opening, wherein the cable is provided with an inner hollow tubing surrounding the optical fibre, and wherein the hollow outer tube is an outer hollow tubing surrounding the inner hollow tubing, the hollow outer tube held at the mounting collar and the inner hollow tubing and optical fibre contained therein pass through a hollow opening of the mounting collar, wherein the mounting collar is inserted within the opening of the optical fibre holder, wherein the mounting collar is secured with the opening of the optical fibre holder to prevent the hollow outer tube from passing from one side of the optical fibre holder to the other, wherein the optical fibre is adapted to be slideably held in the inner hollow tubing such that excess length of optical fibre resulting from contraction of the inner and outer hollow tubes due to temperature effects held in the optical fibre module, wherein one end of the optical fibre and the outer hollow tube is terminated and constrained at a connector.