| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dispersion compensator applicable to a wavelength multiplex transmission system and featuring low loss, wideband usage and minimum ripple. <P>SOLUTION: The dispersion compensator is constructed so that light emitted from a collimator will be reflected plural times from an etalon of 100% single-side reflectance by arranging the etalon and a mirror in parallel or with a slight angle and then enter another collimator. Elements for achieving variable dispersion compensation by changing temperature using a heater, for example, are also provided. In addition, these dispersion compensating elements are provided in multi-stage form and the angle of the mirror and the reflectance of the etalon are optimized. Thus it becomes possible to realize a variable dispersion compensator applicable to the wavelength multiplex optical transmission system and featuring wideband usage and minimum ripple. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
