Carboxymethyl Cellulose (CMC) Optical Fibers for Environment Sensing and Short-range Optical Signal Transmission

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Optical fibers are a key component in modern photonics, where conventionally used polymer materials are derived from fossil-based resources, causing heavy greenhouse emissions and raising sustainability concerns. As a potential alternative, fibers derived from cellulose-based materials offer renewability, biocompatibility, and biodegradability. In the present work, we studied the potential of carboxymethyl cellulose (CMC) to prepare optical fibers with a core-only architecture. Wet-spun CMC hydrogel filaments were cross-linked using aluminum ions to fabricate the optical fibers. The transmission spectra of fibers suggest that the light transmission window for cladding-free CMC fibers was in the range of 550-1350 nm, wherein, the attenuation coefficient for CMC fibers was measured to be 1.6 dB.cm-1 at 637 nm. CMC optical fibers were successfully applied in touch sensing and respiratory rate monitoring. Finally, as a proof-of-concept, we demonstrate high-speed (150 Mbit/s) short-distance signal transmission using CMC fibers (at 1310 nm) in both air and water media. Our results establish the potential of carboxymethylcellulose-based biocompatible optical fibers for highly demanding advanced sensor applications, such as in the biomedical domain.
Original languageEnglish
JournalACS Applied Materials & Interfaces
Publication statusE-pub ahead of print - 8 Jan 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • cellulose
  • Carboxymethyl cellulose (CMC)
  • optical fibers
  • fibers
  • sensing
  • optical fiber sensing

Fingerprint

Dive into the research topics of 'Carboxymethyl Cellulose (CMC) Optical Fibers for Environment Sensing and Short-range Optical Signal Transmission'. Together they form a unique fingerprint.

Cite this