A simple technique for observing periodic nonlinearities in Michelson interferometers

Broadband fiber Bragg gratings for dispersion management

“…The accuracy of these location measurements is limited by the motion stage encoder -usually interferometer based, which is susceptible to several degradations, such as interpolator inaccuracies, noise in edge detection electronic circuitry, and random fluctuations in received interpolatorlaser light. [33] A simple analysis illustrates some of the advantages and disadvantages of the velocity-controlled approach. The fiber is translated at a velocity v past a stationary phase mask through which propagates a laser beam that is time-modulated at radial frequency ω, which be expressed as…”

Monte Carlo evaluation of periodic error uncertainty

“…(1), where θ is the deviation of the polarizer angle from 45 • and the variables A-F are defined in Eqs. (2)- (7).…”

Optical parts and the nonlinearity in heterodyne interferometers

“…From the beginning, the polarizing beam splitter was taken into account as an important reason for the nonlinearity in heterodyne interferometers [2,8,11,16]. So, here we will not concern ourselves with the influence of the PBS on nonlinearity but rather show how to examine and distinguish experimentally between two typical errors of PBS which could often be mistaken.…”

“…Periodic error in heterodyne interferometry has been demonstrated in literatures [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Many researchers have studied their behaviour [1][2][3][4][5][6][7] or have developed the detecting techniques [5,11,12], and some have shown the possibility to eliminate the nonlinearity [5,9,10,15,18].…”

“…Many researchers have studied their behaviour [1][2][3][4][5][6][7] or have developed the detecting techniques [5,11,12], and some have shown the possibility to eliminate the nonlinearity [5,9,10,15,18]. Also many have investigated the influence of imperfect optic parts on the nonlinearity [2,4,[6][7][8]11,16].…”