Final Results of the Industrial Production of CMS Tracker Analog Optohybrids

Approximately 15,000 analog optical transmitter modules with two or three channels each will be installed in the CMS experiment to read out the Silicon Strip Tracker. These Analog Optohybrids were produced in Austrian and Italian industries from mid-2003 to autumn 2005. After assembly, each unit was thoroughly tested for electrical and optical properties and all results were stored in the CMS Tracker database, which allows a wide range of analyses. We will discuss statistical distributions of important parameters and their impact on the system. Among minor issues, three significant problems occurred during the industrial production. Those will be described together with the corrective actions taken and the lessons learned.