Journal
OPTICS LETTERS
Volume 43, Issue 2, Pages 283-286Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.000283
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Funding
- National 863 Project of China [2015AA016903]
- National Natural Science Foundation of China (NSFC) [61378008]
- Fundamental Research Funds for the Central Universities (FRFCU) [2682016ZY04]
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We propose a fully digital programmable optical frequency comb (OFC) generation scheme based on binary phase-sampling modulation, wherein an optimized bit sequence is applied to phase modulate a narrow-linewidth light wave. Programming the bit sequence enables us to tune both the comb spacing and comb-line number (i.e., number of comb lines). The programmable OFCs are also characterized by ultra-flat spectral envelope, uniform temporal envelope, and stable bias-free setup. Target OFCs are digitally programmed to have 19, 39, 61, 81, 101, or 201 comb lines and to have a 100, 50, 20, 10, 5, or 1MHzcomb spacing. As a demonstration, a scanning-free temperature sensing system using a proposed OFC with 1001 comb lines was also implemented with a sensitivity of 0.89 degrees C/MHz. (c) 2018 Optical Society of America
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