Patent ID: 7693372
Filing Date: 2010-04-06
Classification: G02B

Abstract:
1. An optical communication module, comprising: a first optical component; a second optical component; a lens between said first optical component and said second optical component which optically couples said first and said second optical components; and first and second refraction plates positioned at slanted angles between said lens and said second optical component, said first refraction plate having a first optical oath variation for performing a coarse adjustment and said second refraction plate having a second optical path variation different from said first optical path variation for performing a fine adjustment, wherein each of said refraction plates is fixed in a position to compensate for misalignment of the optical axis from said lens to said second optical component during manufacture of the optical communication module, wherein a temperature change of a refractive index of at least one of said refraction plates is on the order of 1×10