| http://www.w3.org/ns/prov#value | - As a result, higher loss, higher noise coupler and connectors (e.g. physical angle, ball lens, grin-rod lens, etc.) can be used to couple components such as sensors together in the disclosed configuration without suffering from the backscatter noise that such couplers or connectors provide. [0029] As described above, and in accordance with the present invention, optical circulator 104 can be at or
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