Analog differential-phase detection in optical coherence reflectometer

Huan Jang Huang, Tsung Yu Hsieh, Li Dek Chou, Wen Chuan Kuo, Chien Chou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A novel differential-phase optical coherence reflectometer (DPOCR) was proposed using a low-coherence source, integrating it with an analog differential-phase decoding method. In the experiment, the DP-OCR performed a localized surface profile measurement of an optical grating (1200 1p/mm) and demonstrated its ability to measure the translation speed of a tilted mirror. Experimentally, the resolution of the axial displacement of proposed DP-OCR at 185 pm was demonstrated.

Original languageEnglish
Pages (from-to)12847-12858
Number of pages12
JournalOptics Express
Issue number17
StatePublished - 18 Aug 2008


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