An optical switch (14) is disposed with in a measuring section (3) and connected to a base portion of an optical fiber (2). The optical switch (14) includes a pair of adjusting optical fibers (15, 16) having lengths different from each other by a half of a distance resolution, and the optical switch...http://www.google.fr/patents/US5292196?utm_source=gb-gplus-shareBrevet US5292196 - Optical fiber type temperature distribution measuring apparatus
Optical fiber type temperature distribution measuring apparatus
