Abstract
A fiber ring resonator with a temperature drift rate of better than 5 x 104 'C/hour is used for controlling the frequency of a 1.3-lim-wavelength external cavity semiconductor ring laser. This thesis describes the design and testing of both the ring laser and the frequency stabilization system. The gain medium of the ring laser is an optical amplifier. The ring laser shows narrow linewidth and a wide tuning range. Its wavelength variation is much less sensitive to current fluctuations and temperature change than solitary diode lasers'. Because of the strong dependence of index perturbation to temperature and pressure changes, fiber based interferometers require temperature control for use as a frequency reference. If fiber interferometer can be made sufficiently stable, it has many distinct advantages over atomic vapors such as, long term reliability, and low cost. In addition, it is not necessary to search for the absorption line that matches the desired wavelength for the laser to be stabilized. The theory of all fiber ring resonator is given in the manuscript. It shows that the finesse of the ring resonator is governed by the directional coupler loss, fiber attenuation, and fiber loop length. Two independently temperature controlled ring resonators were used to frequency stabilize two ring lasers independently.
Peng, En Titus (1995). Frequency stabilization of a traveling-wave semiconductor ring laser using a fiber resonator as a frenquency reference. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -1562509.