Abstract
We report a nonlinear signal processing system based on a SiGe waveguide suitable for high spectral efficiency data signals. Four-wave-mixing (FWM)-based wavelength conversion of 10-Gbaud 16-Quadrature amplitude modulated (QAM) and 64-QAM signals is demonstrated with less than -10-dB conversion efficiency (CE), 36-dB idler optical signal-to-noise ratio (OSNR), negligible bit error ratio (BER) penalty and a 3-dB conversion bandwidth exceeding 30nm. The SiGe device was CW-pumped and operated in a passive scheme without giving rise to any two-photon absorption (TPA) effects.
Highlights
Optical communication networks have recently witnessed a sustained growth in traffic, driven by an increasing number of network users and the rapid adoption of high bandwidth applications [1]
We report a nonlinear signal processing system based on a SiGe waveguide suitable for high spectral efficiency data signals
These results, along with previous demonstrations [11, 13], highlight the versatility of the SiGe waveguide platform and its strong potential in implementing a wide range of state-of-the-art all-optical signal processing applications both in the near- and the mid-infrared [16, 17]
Summary
Optical communication networks have recently witnessed a sustained growth in traffic, driven by an increasing number of network users and the rapid adoption of high bandwidth applications [1]. This has led researchers to investigate approaches to cope with this increased demand for bandwidth, through e.g. the use of complex modulation formats that lead to a more efficient use of the available bandwidth. The performance requirements on processing systems (such as wavelength converters (WCs) and phase conjugators) designed for such signals are much more stringent than in simpler modulation formats
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
