Abstract
Filter-Driven four wave mixing (FD-FWM) lasers based on microresonators are a family of mode-locked lasers capable of exciting multiple pulses per main cavity round trip [1]. They are capable of a stable output at hundreds of GHz repetition rates. Potential applications of such a laser include frequency comb generation and optical clocks [2]. We present the results of the characterisation of the FSR and chirp of the emission of a laser operating in the FD-FWM regime. The system comprises a chip-based silica microring resonator with FSR of approximately 50 GHz, a tuneable filter, an EDFA and a delay stage (Fig. 1 (a)). The spectroscopy is enabled by a 250 MHz repetition rate stabilised frequency comb and tuneable CW laser.
© 2017 IEEE
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