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We describe branched-fiber sensing with a novel Brillouin time-domain analysis configuration for temperature or strain sensing within a 2-D expanded area. By using a branch configuration with an appropriate number of branches and the newly proposed multiprobe pulse arrangement, the system dynamic range may surpass that of the conventional Brillouin time-domain analyzer, which employs a unicursal fiber...
A novel technique to monitor branched optical fibers is presented, based on the Brillouin analysis with end-reflected probe beams. The principle of the method is described and accompanying applications are discussed.
A novel optical coherence domain reflectometry (OCDR) by use of an optical frequency comb source is proposed and demonstrated with high spatial resolution (<10 cm), large dynamic range (>45 dB), and short measurement time (≤10 s).
We demonstrate a compact waveband cross-connect switch module that will be utilized for creating cost-effective multi-degree optical cross-connect nodes. Its measured performance confirms that it can be applied to metro-edge/metro-access networking in the future.
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