Fiber Stabilization Of Optical Path Differences (opd) Over A Wide Bandwidth Frequency Range For Extended Periods Of Time

The invention relates to fiber stabilization of optical path differences (OPD) over a wide bandwidth frequency range for extended periods of time. The disclosed method for fiber stabilization of optical path differences involves splitting a laser produced optical beam into a first and second optical beam. Further, the method involves circulating the first optical beam to an adjustable optical telescope, and circulating the second optical beam to a reference optical telescope. Also, the method involves splitting the first circulated beam into the first optical beam and the adjustable optical telescope beam, and splitting the second circulated beam into the second optical beam and the reference optical telescope beam. Additionally, the method involves inputting, into an interferometer, the first and second optical beams; and outputting, from the interferometer, a sinusoidal signal. Also, the method comprises filtering the sinusoidal signal to form a high frequency and low frequency signal. Further, the method i