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2 January 1998 Stabilization of microwave subcarrier phase in anisotropic fiber lightguide
B. G. Klevitskiy, I. P. Korshunov
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Proceedings Volume 3211, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '96; (1998) https://doi.org/10.1117/12.345542
Event: International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '96, 1996, Madras, India
Abstract
Experimental study is made on the active stabilization of the microwave subcarrier (w/2 = 6.8 GHz) phase in the anisotropic fiber lightguide (AFL). Both the AFL electrical length thermal shift and the birefringence increment are proportional to the temperature increment (AT). In experiments, AFL with the length 120 m has been used. The fiber was cooled in the temperature range 46÷20 °C. It is shown the system reduces the subcarrier phase thermal instability 20 times when the temperature speed variations are near 30% as compared with the average temperature speed 5 10-3 K/s. It should be noted that the average temperature speed for a fiber cable on ground surface is 5.10-4 K/s. It can hope, therefore, that the residual relative phase instability for the system under consideration will be far less than 5%.
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B. G. Klevitskiy and I. P. Korshunov "Stabilization of microwave subcarrier phase in anisotropic fiber lightguide", Proc. SPIE 3211, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '96, (2 January 1998); https://doi.org/10.1117/12.345542
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KEYWORDS
Microwave radiation
Waveguides
Birefringence
Temperature metrology
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