{'fraction_non_alphanumeric': 0.031833150384193196, 'fraction_numerical': 0.014270032930845226, 'mean_word_length': 5.204081632653061, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Enhanced surface plasmon resonance fiber sensor based on Graphene Oxide

We demonstrated a Graphene Oxide (GO) enhanced Surface Plasmon Resonance (SPR) sensor based on silver-coated side-polished fiber. GO nano-sheets were decorated on the Octadecanethiol (ODT)-silver surface of the side-polished fiber, which enhance the interaction between the SPR wave and molecules near the sensing surface. Experimental results demonstrate that the sensitivity of the GO-modified SPR sensor enhance to 2252.0 nm/RIU, compared with the traditional silver-coated SPR sensor of 1523.5 nm/RIU, which is improved 1.48 times. Meanwhile, ODT and GO films protect the silver-based SPR sensor from degradation and improved the stability of the silver-based SPR sensor. The proposed fiber sensor can be used as promising candidate in portable testing instruments with high immobilization ability for biochemical sensing application.