Status of broadband rare-earth doped fiber sources for FOG applications

Michel J. F. Digonnet

doi:10.1117/12.169896

9 March 1994 Status of broadband rare-earth doped fiber sources for fiber optic gyro applications

Michel J. F. Digonnet

Proceedings Volume 2070, Fiber Optic and Laser Sensors XI; (1994) https://doi.org/10.1117/12.169896
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

Sources with broadband spectra are required for high-grade fiber optic gyroscopes (FOG). To date, the most widely used broadband FOG source is the superluminescent laser diode (SLD), which was developed by the semiconductor laser industry to meet this specific market. However, in spite of significant improvements, commercial SLDs still suffer from a few shortcomings. In response to these limitations, a second class of broadband sources has been under investigation over the last few years, which utilize a rare earth doped fiber as the active medium. Several types of broadband fiber sources have been demonstrated. They offer the advantages of high efficiencies, pumping with a laser diode (LD), high power into the FOG (tens of mW), and a mean wavelength stability with temperature at least one order of magnitude greater than for an SLD. Several university and industrial laboratories have now produced broadband fiber sources with properties far exceeding, on all counts, those of SLDs. The object of this paper is to review the properties of these sources, and their preliminary performance in FOG test beds.

Citation Download Citation

Michel J. F. Digonnet "Status of broadband rare-earth doped fiber sources for fiber optic gyro applications", Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); https://doi.org/10.1117/12.169896

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