Abstract
We demonstrate the frequency stabilization of a laser diode (LD) with a low-intensity noise and a narrow linewidth to a linear absorption line. The LD consists of an InP gain chip and an external Bragg reflector made of a PLC waveguide. By employing an external frequency modulator in a frequency stabilization circuit, an FM-eliminated optical output beam was obtained. The frequency stabilities reached as high as for and for . Furthermore, an RIN of less than and a linewidth of were simultaneously achieved.
© 2009 Optical Society of America
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