Polarization-independent DPSK demodulation using a birefringent fiber loop

Chi Wai Chow*, H. K. Tsang

*Corresponding author for this work

Research output: Contribution to journalArticle

54 Scopus citations


A robust polarization-independent technique for demodulating optical differential phase-shift-keying (DPSK) signals using a birefringent-fiber-loop (BFL) is proposed and demonstrated. The BFL has a differential group delay between its fast and slow optical axes, providing interference which allows the phase modulation to be converted to intensity modulation and then directly detected by a photodiode. Error-free bit-error-rate measurements and clear demodulated eyes were observed. The temperature stability of the scheme improves with the bit rate of the DPSK signal.

Original languageEnglish
Pages (from-to)1313-1315
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number6
StatePublished - 1 Jun 2005


  • Birefringent fiber (BF)
  • Differential phase-shift keying (DPSK)
  • Optical fiber communication

Fingerprint Dive into the research topics of 'Polarization-independent DPSK demodulation using a birefringent fiber loop'. Together they form a unique fingerprint.

  • Cite this