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  • LightSpeed-II CL20010
Mar 2014
ClariPhyRequest Info
IRVINE, Calif., March 25, 2014 — LightSpeed-II CL20010, the single-carrier 200G coherent SoC (system on chip) from ClariPhy Communications, offers programmable modulation for 200G and 400G dense wavelength division multiplexing (DWDM) transport applications.

It supports single-carrier 200G transmission using 16QAM modulation. When combined with its integrated transmit filtering capabilities, it enables dual-carrier 400G superchannels on 75-GHz DWDM spacing.

The CL20010 acts as a single-chip OTN (optical transport network) muxponder, multiplexing two independent 100G client signals (either OTU4 or 100G Ethernet) onto a single DWDM wavelength over the same optics that are used for 100G coherent transmission. It offers additional advanced features such as high-gain soft decision forward error correction, digital transmit filtering supporting flexible grid DWDM, and carrier recovery that provides the robustness to phase noise that is required with 16QAM modulation.


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In general, changes in one oscillation signal caused by another, such as amplitude or frequency modulation in radio which can be done mechanically or intrinsically with another signal. In optics the term generally is used as a synonym for contrast, particularly when applied to a series of parallel lines and spaces imaged by a lens, and is quantified by the equation: Modulation = (Imax – Imin)/ (Imax + Imin) where Imax and Imin are the maximum and minimum intensity levels of the image.
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