We have developed a novel integrated platform for liquid photonics based onliquid core optical fiber (LCOF). The platform is created by fusion splicingliquid core optical fiber to standard single-mode optical fiber making it fullyintegrated and practical - a major challenge that has greatly hindered progressin liquid-photonic applications. As an example, we report here the realizationof ultralow threshold Raman generation using an integrated CS2 filled LCOFpumped with sub-nanosecond pulses at 1064nm and 532nm. The measured energythreshold for the Stokes generation is ~ 1nJ, about three orders of magnitudelower than previously reported values in the literature for hydrogen gas. Theintegrated LCOF platform opens up new possibilities for ultralow powernonlinear optics such as efficient white light generation for displays, mid-IRgeneration, slow light generation, parametric amplification, all-opticalswitching and wavelength conversion using liquids that have orders of magnitudelarger optical nonlinearities compared with silica glass.
展开▼
