BACK FACET WAVELENGTH LOCKER TUNING AND ASSEMBLY METHOD

摘要

WAVELENGTH LOCKERS, WHICH MONITOR THE WAVELENGTH DRIFT OF A LASER'S BEAM DUE TO AGING, ARE TUNABLE TO ADJUST FOR MANUFACTURING MISALIGNMENTS BETWEEN ITS VARIOUS OPTICAL COMPONENTS. TUNING IS ACCOMPLISHED BY ADJUSTING THE POSITION OF A COLLIMATING LENS (28) USING A FLEXURE (30). ADJUSTING THE LENS (28) POSITION CHANGES THE ANGLE OF INCIDENCE OF A MONITORED BEAM (22) RELATIVE TO A FIXED FILTER (26) AND DETECTOR AND AVOIDS THE CHALLENGING MANUFACTURING TASK OF ROATTING THE FILTER (26) AND DETECTOR TO ACHIEVE THE SAME RESULT.(FIG 1)