Non-intrusive optical fibre network

Details Non-intrusive optical fibre network Non-intrusive optical fibre network

H - Electricity

04

B

325/1

H04B 10/213 (2006.01)

Patent

CA 1257651

OPTICAL FIBRE NETWORK Abstract of the Disclosure An optical fibre network which does not require the fibre (1) to be broken to introduce new terminals (nodes)(3). Information is introduced into the fibre by modulating, particularly by modulating mode coupling, optical power transmitted into the fibre from a source at one or both of its ends. The nodes include tapping means for extracting information. If resonant mode coupling is employed a common grating may be used for introducing and extracting information. Such a non-intrusive network may be overlaid on a conventional local area optical network between two nodes thereof, the fibre being common to both networks. The nodes of the conventional network communicate in one direction along the fibre, whereas the nodes of the non-intrusive network communicate in the opposite direction along the fibre.

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