Abstract:Various types of photonic applications, such as sensing and communication, require the generation of wideband optical frequency-modulated (FM) signals. However, generating a wideband FM signal beyond the electrical bandwidth limitation of optical modulators is difficult. Here, we propose a method to increase the bandwidths of optical FM signals by using the cascaded four-wave-mixing (FWM) process and show its potential in two applications. We first demonstrate elevenfold bandwidth expansion of frequency-modula… Show more
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