COMPACT TRANSISTOR OUTLINE PACKAGED LASER WITH OPTICAL MONITORING FUNCTION

摘要

An apparatus comprising a header comprising a platform for attaching opto - electronic components, an optical element (635), a laser diode (631) configured to emit an optical signal that passes through the optical element (635), and a cap affixed to the header such that the cap is coaxially aligned with the header, wherein the cap and header encase the optical element and the LD. Back facet emission of the laser diode (631) is detected by a photodiode (632) for wavelength stabilisation via a TEC (638). A second photodiode (637) intercepts the output beam after the wavelength filter (635) which is temperature controlled by a micro-heater (636).