All-optical format conversion from RZ-QPSK to NRZ-QPSK

Bingrong ZOU; Yu YU; Wenhan WU; Shoujin HU; Zheng ZHANG; Xinliang ZHANG

doi:10.1007/s12200-012-0268-8

Front. Optoelectron. ›› 2012, Vol. 5 ›› Issue (3) : 330 -333. DOI: 10.1007/s12200-012-0268-8

RESEARCH ARTICLE

All-optical format conversion from RZ-QPSK to NRZ-QPSK

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Abstract

We proposed and demonstrated an all-optical format conversion from return-to-zero quadrature phase shift keying (RZ-QPSK) to non-return-to-zero QPSK (NRZ-QPSK) at 40 Gb/s using a half bit delay interferometer (DI). Due to the constructive interference in the DI, the format conversion was achieved with the phase information preserved. Q penalty for the format conversion was less than 1.8 dB for I and Q data.

Keywords

format conversion / fiber optics communications / modulation

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Bingrong ZOU, Yu YU, Wenhan WU, Shoujin HU, Zheng ZHANG, Xinliang ZHANG. All-optical format conversion from RZ-QPSK to NRZ-QPSK. Front. Optoelectron., 2012, 5(3): 330-333 DOI:10.1007/s12200-012-0268-8