TUNABLE DISPERSION COMPENSATION BY AN ANGULAR CONSERVED GRATING-PAIR SYSTEM

To our knowledge the concept of an angular conserved grating-pair disp ersion compensation system is proposed for the first time, and further more a model of such a system is developed and applied to the study of two- and three-lens special cases. A set of easy-to-use dispersion co mpensation formulas based on geometric optics has been derived and con firmed by our experimental results. Tunability and a compensation rati o as high as 27,600 have been achieved with two- and three-lens system s, respectively. (C) 1995 Optical Society of America