Pigtail style collimator for 1550nm with an f=1.81mm Grin lens in a 2.5mm OD housing (short version), with -55dB return loss, with a 1 meter long, 900µm OD cabled, 8/125µm PM fiber, terminated with an angle FC/APC connector with the key aligned and locked along slow axis with ER>20dB. The predicted collimated beam diameter will be around 0.4mm at the 1/e^2 level.