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 Tue Jul 2 11:21:24 2013, Erica, DailyProgress, fiber optic, mode matching 
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 Wed Jul 3 09:46:48 2013, Erica, DailyProgress, fiber optic, mode matching
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Thu Jul 11 01:40:19 2013, Erica, DailyProgress, fiber optic, mode matching
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Fri Jul 12 00:51:39 2013, Erica, Notes, fiber optic, mode matching
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Tue Jul 16 10:27:47 2013, Erica, Notes, fiber optic, mode matching, beam recombination
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Tue Jul 16 11:02:47 2013, Erica, Notes, fiber optic, mode matching, beam recombination
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Wed Jul 17 11:58:47 2013, Erica, Notes, fiber optic, mode matching, beam recombination
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Wed Jul 17 18:29:37 2013, Erica, DailyProgress, fiber optic, reducing drift in the recombined beam
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Sat Jul 20 23:39:09 2013, Erica, DailyProgress, fiber optic, reducing drift in the recombined beam
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Tue Jul 23 10:29:12 2013, Erica, DailyProgress, fiber optic, reducing drift in the recombined beam
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Tue Jul 23 11:43:00 2013, Evan, DailyProgress, Electronics Equipment, Zach's op-amp recommendations
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Fri Jul 26 11:07:44 2013, Erica, DailyProgress, BEAT, circuit for measuring temperature fluctations on CTN table
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Fri Jul 26 11:22:45 2013, Erica, DailyProgress, BEAT, circuit for measuring temperature fluctations on CTN table
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Fri Jul 26 11:45:28 2013, Erica, DailyProgress, BEAT, circuit for measuring temperature fluctations on CTN table
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Mon Jul 29 13:30:26 2013, Erica, DailyProgress, BEAT, adding resistor, capacitor, and sockets
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Tue Jul 30 12:23:41 2013, Erica, DailyProgress, BEAT, addressed noise problem, DC signal
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Thu Aug 1 00:25:02 2013, Erica, DailyProgress, fiber optic, insulating foam
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Fri Aug 2 12:38:41 2013, tara, DailyProgress, fiber optic, insulating foam
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Tue Aug 6 12:31:24 2013, Erica, DailyProgress, fiber optic, insulating foam
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Wed Aug 7 13:27:00 2013, Erica, DailyProgress, fiber optic, more foam, calculations for convertion from voltage to frequency
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Wed Aug 7 18:53:20 2013, Erica, DailyProgress, fiber optic, noise budget, Matlab notes.
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Tue Aug 13 12:39:36 2013, Erica, DailyProgress, fiber optic, rewrote calculations for converting from voltage noise to frequency noise
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Tue Aug 13 12:28:20 2013, Erica, Notes, Electronics Equipment, new AD 590 circuit and its noise calculation, beam alignment
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Fri Aug 16 10:35:44 2013, Erica, Notes, Electronics Equipment, AD590 msrmt, conversion to freq noise
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Tue Jul 30 16:19:32 2013, Erica, Notes, fiber optic, setup for beam recombination
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Mon Aug 5 12:21:00 2013, Erica, Notes, fiber optic, calculation: phase change for fiber
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Tue Jul 30 15:48:47 2013, Erica, DailyProgress, fiber optic, noise for GYRO
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Message ID: 1279
Entry time: Mon Aug 5 12:21:00 2013
In reply to: 1241
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| Author: |
Erica |
| Type: |
Notes |
| Category: |
fiber optic |
| Subject: |
calculation: phase change for fiber |
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I'm not sure of the exact material of the fiber and therefore its index of refraction and coefficient of thermal expansion, so I'll have to email Thorlabs.
Right now I have
n = 1.5
alpha = 10^-6 /K
lambda = 1064nm
L = 60m
to give a deltaT of about 10 mK for the temperature changed needed to change the length of the fiber by one wavelength, or for the phase to change by 2pi. |
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