Journal article
Simultaneous Polarization-Insensitive Wavelength Conversion of 80-Gb/s RZ-DQPSK Signal and 40-Gb/s RZ-OOK Signal in a Ti:PPLN Waveguide
Heinrich Hertz Inst., Fraunhofer Inst. for Telecommun., Berlin, Germany1
Dept. of Appl. Phys., Univ. of Paderborn, Paderborn, Germany2
Simultaneous all-optical wavelength conversion of an 80-Gb/s return-to-zero differential quadrature phase shift keying (RZ-DQPSK) data signal and a 40-Gb/s return-to-zero ON--OFF keying (RZ-OOK) data signal using a Ti:PPLN waveguide in a polarization-diversity loop configuration are demonstrated. The wavelength conversion is fully transparent to polarization, data rate, modulation format, and modulation level.
The conversion efficiency for the signals was -21 dB, which includes 9.2-dB passive losses in the whole Ti:PPLN subsystem. Error-free performance for both wavelength-converted signals was achieved for polarization-scrambled input data signals without additional penalty caused by the polarization scrambling.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2011 |
| Pages: | 1092-1097 |
| ISSN: | 15582213 and 07338724 |
| Types: | Journal article |
| DOI: | 10.1109/JLT.2011.2107501 |
All-optical wavelength conversion (AOWC) Modulation Optical polarization Optical transmitters Optical waveguides Optical wavelength conversion RZ-DQPSK signal RZ-OOK signal Receivers Signal to noise ratio all-optical wavelength conversion optical harmonic generation optical waveguides optical wavelength conversion periodically poled lithium niobate (PPLN) polarization insensitive polarization-diversity loop configuration quadrature phase shift keying return-to-zero differential quadrature phase shift keying second-harmonic generation (SHG) simultaneous polarization-insensitive wavelength conversion
