Apparatus is disclosed for precision alignment and assembly of opto-electronic components relative to one another, the apparatus comprising a selected optical component having a periphery forming at least one flat surface; a holding block having at least one attachment region corresponding to the at least one flat surface of the selected optical component; a positioning mechanism having a first portion and a second portion, the first portion configured to position the selected optical component relative to another opto-electronic component, and the second portion configured to position the holding block relative to the selected optical component and in contact with a platform in attachment with the another opto-electronic component; and an attachment component disposed between the selected optical component and the holding block, and the attachment component disposed between the holding block and the platform so as to fix the selected optical component in position relative to the another opto-electronic component. A method of precision alignment and assembly of opto-electronic components relative to one another is disclosed, the method comprising: positioning the selected optical component relative to the another optical component using the first portion of the positioning mechanism; positioning the holding block relative to the selected optical component and in contact with the platform; and securing the selected optical component and the holding block, and the holding block and the platform, with the attachment component.