| 摘要 |
A transducer (20) for detecting applied acoustic signals (31) and the like. The transducer (20) comprises two ridged members (21, 22) having parallel juxtaposed rippled surfaces (23, 24) which compress and deform an optical fiber waveguide therebetween. The two rippled surfaces (23, 24) have predetermined ripple pitches associated therewith. Resilient means (28, 36) are coupled to the ridged members (23, 24) which restricts the lateral movement of the ridged members (21, 22) so that the rippled surfaces (23, 24) are constrained to move normal to their respective surfaces. Thus, the resilient means (28, 36) allow the ridged members (21, 22) to move along an axis between them and compress and deform the fiber waveguide disposed therebetween. The resilient means (28, 36) may also be constructed to preload the amount of compression exerted on the waveguide. Sensitivity adjustment means (30, 38) are provided for adjusting the relative positions of the two ridged members (21, 22), which position the two rippled surfaces (23, 24) relative to one another. This ajustment controls the overall sensitivity of the transducer (20). |
