Backward supercontinuum generation seeded by random distributed feedback fiber laser is proposed and demonstrated. Fully-distributed random lasing is firstly used as an effective pump laser to generate supercontinuum in the hybrid configuration with TrueWave fiber and dispersion compensated fiber. Supercontinuum in both propagating directions are generated through the collective nonlinear effects. It is found backward supercontinuum possesses much lower dynamical amplitude fluctuation in time domain. Random distributed lasing pumped supercontinuum generation not only enrich both the research scope of supercontinuum and random fiber laser, but also provide a practical way for development of stable broadband sources for OCT applications.
A novel broadband light source based on supercontinuum (SC) generation seeded by random distributed feedback fiber laser (RFL) is proposed and demonstrated for the first time. A half-opened fiber cavity formed by FBG and TrueWave fiber is used to generate random lasing and SC simultaneously. Experimental results indicate that RFL can be used as an effective pump for generation of SC. SC with 20-dB bandwidth of >250 nm was obtained. Such a broadband SC light source seeded by RFL may pave a way to generate high power broadband RFLs for use in optical sensing and measurement.
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