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Week 3 Webworks - crit ά crit = sin-1(n core n air cos i...

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Webworks Week 3 1. n = c/v, where c = 3 x 10 8 m/s and v is given as 1.1 x 10 8 m/s n = (3 x 10 8 m/s) / (1.1 x 10 8 m/s) = 2.73 2. “θ bench = i + r" 3. “θ mirror = i" 4. Theoretical : θ mirror = ½ θ bench 2 (17.5) = θ bench 35° = θ bench Actual θ bench = 48.5° % discrepancy = (theoretical – actual) / (theoretical) x 100 = [(35 – 48.5) /35] x 100 = 38.6% 5. n core = 1.54 n clad = 1.36 n air = 1.00 sin i crit = (n core /n clad ) i crit = sin -1 (n core /n clad ) = sin -1 (1.36 / 1.54) i crit = 62.0° sin ά crit = (n core / n air ) cos i
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Unformatted text preview: crit ά crit = sin-1 [(n core / n air ) cos i crit ] ά crit = sin-1 [(1.54 / 1.00) cos (62.0°)] ά crit = 46.3° 6. “coherent: aligned fiber ends” 7. “incoherent: no specific alignment of the fiber ends is necessary” 8. “spectral capacity: how much of the transmitted wavelengths are conveyed” 9. “stiffness” 10. “indirect: it uses a reagent that changes its optical properties in response to changes in the material of interest”...
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