Inter-Band Crosstalk Reduction Using Sinc Apodization of Super-Structured Fiber Bragg Gratings for Hybrid WDM/OCDM Add/Drop Filters

Author

Minato, Naoki ; Kobayashi, Shuko ; Sasaki, Kensuke ; Kashima, Masayuki

Author_Institution

Corp. R&D Center, Oki Electr. Ind. Co., Ltd., Saitama, Japan

Volume

24

Issue

6

fYear

2012

fDate

3/15/2012 12:00:00 AM

Firstpage

446

Lastpage

448

Abstract

Here, we propose a newly developed hybrid system of wavelength-division multiplexing (WDM) and optical code-division multiplexing (OCDM) with phase-shifted coherent time-spreading for the future metro-access integrated network. In order to suppress the inter-band crosstalk from the WDM interfering channels, the sinc-apodizing technique is proposed for the super-structured fiber Bragg gratings (SSFBGs) as the add/drop filters. The suppression of crosstalk is demonstrated by two-channel WDM and OCDM experiments, compared with conventional SSFBGs with uniform index profile. The proposed method suppresses the crosstalk and shows the feasibility of the 160 (10 WDM 16 OCDM)-channel system.

Keywords

Bragg gratings; code division multiplexing; optical communication equipment; optical crosstalk; optical fibre communication; optical filters; telecommunication channels; wavelength division multiplexing; SSFBG; hybrid WDM/OCDM add/drop filters; interband crosstalk reduction; interfering channels; metro-access integrated network; optical code-division multiplexing; phase-shifted coherent time-spreading; sinc apodization; superstructured fiber Bragg gratings; wavelength-division multiplexing; Bit error rate; Code division multiplexing; Crosstalk; Indexes; Optical crosstalk; Wavelength division multiplexing; Bragg gratings; code-division multiplexing (CDM); fiber optics; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2180709

Filename

6111193