The Avago TO293Bxxx is an hermetically sealed TO can device with integral photo diode for optical output monitoring using a 1310nm single mode edge-emitting laser diode chip family for use in uncooled applications up to 2.7Gb/sec. It supports CWDM wavelengths from 1270 to 1450nm. The laser is mounted into a TO-56 header and hermetic sealed with a specific lens cap.
The laser design is a capped mesa buried heterostructure (CMBH) grown on n-type substrate with multi-quantum well (MQW) active layers and distributed feedback (DFB) grating layer. The facets are coated with an anti-reflectance layer on the front facet and a high reflectance coating on the rear facet.