Patent ID: 6584249
Filing Date: 2003-06-24
Classification: G02B

Abstract:
An optical dispersion compensator for a predetermined range of wavelengths, said compensator comprising:a Fabry-Perot etalon having a front reflective mirror and a rear reflective mirror in a parallel spaced relationship to form a cavity between said reflective mirrors, the reflectivity of said front reflective mirror being substantially smaller than the reflectivity of said rear reflective mirror, said reflectivity of said rear reflective mirror being greater than 97% and less than 100%, and a dual-fiber collimator comprising a dual-fiber pigtail and a GRIN lens, said dual-fiber pigtail having an input fiber and an output fiber with a separation between said input fiber and said output fiber, wherein an optical signal is coupled into said input fiber and then collimated by said GRIN lens into a collimated incident beam which is incident on said Fabry-Perot etalon with an incident angle, said collimated incident beam is reflected back by said Fabry-Perot etalon into a collimated reflected beam which is collected by said GRIN lens and then coupled into said output fiber, such that at least one negative dispersion region is achieved.