1550nm SLED Transceiver with Integrated Isolator

An optical transceiver module, based on a broadband Superluminescent Light-Emitting Diode (SLED) at 1550 nm and an integrated receiver photodiode, has been developed. The compact 14-pin butterfly (BTF) module integrates micro-optical lenses, a flatpack optical isolator, a 50:50 beam splitter and other components on a temperature-controlled, free-space optical bench platform and is delivering, at an SLED current of 250 mA, around 5 mW of output power at a polarization-maintaining (PM) output fiber with a polarization extinction ratio (PER) larger than 20 dB over a temperature operating range from $- 40 ^{\circ}\mathrm{C}$ to $+ 85 ^{\circ}\mathrm{C}$.