Optical DPSK demodulator based on pi-phase-shifted fiber Bragg grating with an optically turnable phase shifter

T.-Y. Kim, M. Hanawa, Sun-Jong Kim, S. Hann, Y.H. Kim, W.-T. Han, C.-S. Park

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We propose and demonstrate a novel optical differential phase-shift keying (DPSK) demodulator with an optically tunable phase shifter. The proposed DPSK demodulator is implemented by using a pi-phase-shifted fiber Bragg grating and an Yb3+-Al3+ codoped optical fiber. A 10-Gb/s DPSK signal was successfully demodulated by the proposed demodulator, showing clearly open eye diagrams as well as bit-error-free performance. Moreover, the phase of delayed optical signal can be tuned by the phase shifter that is controlled by a pumping light at around 980nm.
Original languageEnglish
JournalI E E E Photonics Technology Letters
Volume18
Pages (from-to)1834-1836
ISSN1041-1135
DOIs
Publication statusPublished - 2006

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