2 June 2014 An all optical fiber frequency reference using digital interferometry
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915726 (2014) https://doi.org/10.1117/12.2059435
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
We use digitally enhanced heterodyne interferometry to measure the stability of optical fiber laser frequency references. Suppression of laser frequency noise by over four orders of magnitude is achieved using post processing time delay interferometry. This approach avoids dynamic range and bandwidth issues that can occur in feedback stabilization systems. Thus long fiber lengths may be used resulting in better frequency discrimination, a reduction in spatially uncorrelated noise sources and an increase in interferometer sensitivity. We achieve an optical stability of 30 Hz/√Hz for quasi-static frequencies as low as 20 mHz.
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Malcolm B. Gray, Malcolm B. Gray, Terry G. McRae, Terry G. McRae, Silvie Ngo, Silvie Ngo, Daniel A. Shaddock, Daniel A. Shaddock, Magnus T. L. Hsu, Magnus T. L. Hsu, } "An all optical fiber frequency reference using digital interferometry", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915726 (2 June 2014); doi: 10.1117/12.2059435; https://doi.org/10.1117/12.2059435
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