Patent ID: 7073915
Filing Date: 2006-07-11
Classification: G02B

Abstract:
1. A mirror fixing method capable of reducing stress distortion of a surface of a mirror which constitutes part of a variable wavelength dispersion compensator, said stress distortion being generated as a result of fixing said mirror, said method comprising: forming a base plate having the mirror on one face thereof; providing a boss on another face of the base plate opposite to the face on which the mirror is formed; forming a first fixture including a receiving plate with an opening capable of inserting said boss therein; providing the receiving plate with a screw hole perpendicular to a side wall of said opening; fixing the boss, which is inserted in the opening of said receiving plate, with a screw from the side using the screw hole, so that the mirror and the base plate are not in contact with other members; and forming an aspherical mirror as said mirror in said variable wavelength dispersion compensator, on the one face of the base plate.