2-D time domain spectral phase encoding/wavelength hopping coherent DPSK-OCDMA system using Fiber Bragg Gratings and phase modulator

Zhensen Gao, Bo Dai, Xu Wang, Nobuyuki Kataoka, Naoya Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose and experimentally demonstrate a reconfigurable two-dimensional (temporal-spectral) time domain spectral phase encoding (SPE) scheme for coherent optical code-division-multiple-access (OCDMA) application. The time-domain SPE scheme is robust to wavelength drift of the light source and is very flexible and compatible with the fiber optical system. In the proposed scheme, the ultra-short optical pulse is stretched by dispersive device and the SPE is done in time domain using high speed phase modulator. A Fiber Bragg Gratings array is used for generating the two-dimensional wavelength hopping pattern while the high speed phase modulator is used for generating the spectral phase pattern. The proposed scheme can enable simultaneous generation of the time domain spectral phase encoding and DPSK data modulation using only a single phase modulator. In the experiment, the two-dimensional SPE codes have been generated and modulated with 2.5-Gb/s DPSK data using a single phase modulator. Transmission of the 2.5-Gb/s DPSK data over 49km fiber with BER<10 -9 has been demonstrated successfully. The proposed scheme exhibits the potential to simplify the architecture and improve the security of the OCDMA system.

Original languageEnglish
Title of host publicationOptical Transmission Systems, Switching, and Subsystems VIII
Volume7988
DOIs
Publication statusPublished - 2011
EventOptical Transmission Systems, Switching, and Subsystems VIII - Shanghai, China
Duration: 8 Dec 201012 Dec 2010

Conference

ConferenceOptical Transmission Systems, Switching, and Subsystems VIII
CountryChina
CityShanghai
Period8/12/1012/12/10

Keywords

  • Fiber Bragg Gratings
  • Optical code division multiple access
  • Phase modulation
  • Spectral phase encoding/decoding

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    Gao, Z., Dai, B., Wang, X., Kataoka, N., & Wada, N. (2011). 2-D time domain spectral phase encoding/wavelength hopping coherent DPSK-OCDMA system using Fiber Bragg Gratings and phase modulator. In Optical Transmission Systems, Switching, and Subsystems VIII (Vol. 7988) https://doi.org/10.1117/12.887977