Research Article
An Optical Fiber Measurement System for Blade Tip Clearance of Engine
Table 1
Design parameters of the sensor fiber probe.
| | Parameters | Value |
| | Emitting fiber (EF) | | | Fiber radius (nucleus) | 150 μm | | Fiber cladding | 15 μm | | NA | 0.22 |
| | Receiving fibers (RFs) | | | Fiber radius (nucleus) | 150 μm | | Fiber cladding | 15 μm | | NA | 0.37 |
| | Fiber type: standard multimode optical fiber | |
| | Fiber length | 1.5 m |
| | : diameter of middle fiber bundle | 1050 μm |
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