Double lock-in amplifier faraday rotation glucometer

Sunghoon Jang, Zhi Yang, Martin D. Fox, Dan censor

Research output: Contribution to conferencePaperpeer-review


We previously proposed a new approach to optical glucose sensing using Faraday rotation in glucose solutions which we called the MORE effect 'magnetic optical rotatory effect'. Here we introduce an improved light detection method using a double lock-in amplifier technique [1,2]. We present experimental data to confirm the concept of using a double lock-in amplifier technique to improve SNR by separating a small, narrow band signal from interfering noise. Preliminary results show excellent SNR with input laser intensity at 300 Micro Watts, suggesting that safety standards for short duration laser exposure in the eye can be met.

Original languageEnglish
Number of pages2
StatePublished - 1 Jan 2000
Externally publishedYes
EventIEEE 26th Annual Northeast Bioengineering Conference - Sotrrs, CT, USA
Duration: 8 Apr 20009 Apr 2000


ConferenceIEEE 26th Annual Northeast Bioengineering Conference
CitySotrrs, CT, USA

ASJC Scopus subject areas

  • Bioengineering


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