The AA0701 Series from Gooch & Housego (GH) are InGaAsP/InP DFB Lasers that operate at 1310 nm and from 1537-1565 nm (C-band). They provide an output power of 18 mW and 10 mW, respectively. These lasers have a source-dependent linewidth of 1 MHz, side-mode suppression of more than 30 dB, and a polarization extinction ratio of 19 dB. They have a forward voltage of up to 2 V and require a drive current of 100 mA. These lasers have a built-in isolator, TEC, thermistor, and monitor detector. They are available in a laser-welded, hermetically sealed 7-pin k-package that measures 29.97 x 12.70 x 10.11 mm with FC/APC connector and 900 µm SM/PM fibers. They are suitable for analog RF links and high-speed pulse applications.