Coherent Subcarrier Processing Node Based on Optical Frequency Conversion and Free-Running Lasers

Author

Richter, Thomas ; Schmidt-Langhorst, Carsten ; Elschner, Robert ; Kato, Tomoyuki ; Tanimura, Takahito ; Watanabe, Shigeki ; Schubert, Colja

Author_Institution

Fraunhofer Inst. for Telecommun., Heinrich Hertz Inst., Berlin, Germany

Volume

33

Issue

3

fYear

2015

fDate

Feb.1, 1 2015

Firstpage

685

Lastpage

693

Abstract

We demonstrate the use of frequency conversion in optical fiber to implement a coherent add/drop architecture. Its application is experimentally investigated in an optical frequency-division multiplexing scenario with up to three subcarriers which are modulated by quadrature phase-shift keying. We show subcarrier drop and replacement in a bus topology. Furthermore, we quantify tolerances with respect to delay and amplitude mismatch by experiments and simulations. Finally, we discuss on the scalability of the scheme.

Keywords

OFDM modulation; delays; optical fibre communication; optical frequency conversion; quadrature phase shift keying; amplitude mismatch; coherent add/drop architecture; coherent subcarrier processing node; delay; free-running lasers; optical frequency conversion; optical frequency-division multiplexing; quadrature phase-shift keying; Frequency conversion; Modulation; OFDM; Optical fibers; Optical noise; Add-drop multiplexing; coherent detection; fiber nonlinearity; frequency conversion; optical fiber communication; optical frequency-division multiplexing; quadrature; quadrature amplitude modulation;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2379472

Filename

6979203