Attenuation characteristics of a light attenuator combined by polarizers with different extinction ratios

Chong Huang, Peng Deng, Shuang Zhao, Hai Qing Chen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


This paper deals with a systematical analysis and an algorithm of attenuation characteristics of a light attenuator combined by n pieces of polarizers (n-LACP) whose extinction ratios are different from each other. The attenuation ratio expression of a two-LACP is deduced. We find that the monotonic attenuation interval depends on the first polarizer and that the attenuation range depends on the second one. For the three-LACP, a method for obtaining a monotonic attenuation interval is proposed. Moreover, the attenuation ratio expression is demonstrated. Analysis and experiment show that when the initial status of the three-LACP is at the maximum output, if the second or third polarizer rotates alone, the minimum attenuation ratios can reach K2-1 and K3-1, respectively, and if the first polarizer rotates, a minimum attenuation ratio of K 2-1K3-1 can be obtained (K 1, K2 and K3 represent the extinction ratios of the three polarizers in turn). Furthermore, the attenuation ratio expression of n-LACP and the relevant attenuation characteristics are proposed. The minimum attenuation ratio of an n-LACP is (K2K3 K n)-1.

Original languageEnglish
Article number084209
JournalChinese Physics B
Issue number8
StatePublished - Aug 2011


  • Jones vector
  • extinction ratio
  • light attenuator
  • polarizer

ASJC Scopus subject areas

  • Physics and Astronomy (all)


Dive into the research topics of 'Attenuation characteristics of a light attenuator combined by polarizers with different extinction ratios'. Together they form a unique fingerprint.

Cite this