Fabrication of superluminescent diode (SLD) for gyro light source with broadband, high power, and large polarization-extinction ratio performance

A superluminescent diode (SLD) for interferometric optical fiber gyro has been demonstrated. High compressive strain MQW and mirror-integrated 7-degree waveguide leads to >10mW power, >20nm bandwidth, and large polarization extinction ration (>15dB) with rotation sensing.