InP DP-IQM (left) schematic and (right) module.
Impact Statement:This paper presents single-carrier transmission using an InP IQ modulator and single-ended detection (SED), a simpler coherent detection receiver than the traditional. Th...Show More
Abstract:
We demonstrate a single-wavelength, 344-Gb/s, 43-Gb 16-quadrature amplitude modulation (QAM) polarization division multiplexed signal transmission over 800 km operating b...Show MoreMetadata
Impact Statement:
This paper presents single-carrier transmission using an InP IQ modulator and single-ended detection (SED), a simpler coherent detection receiver than the traditional. This paper has three experimental demonstrations: 1) with SED, 16-QAM 300G transmission for metro reach (800 km) operating below the hard-FEC threshold; 2) a novel DSP algorithm is proposed to combat self-beating noise and is compared with the previous art; and 3) a comparison between balanced detection and various SED schemes.
Abstract:
We demonstrate a single-wavelength, 344-Gb/s, 43-Gb 16-quadrature amplitude modulation (QAM) polarization division multiplexed signal transmission over 800 km operating below the hard-decision forward error correction (FEC) BER threshold of 3.8\times 10^{-3} using an InP dual-polarization in-phase/quadrature modulator. At the receiver, a simplified single-ended coherent receiver with novel digital signal processing (DSP) for self-beating noise removal is employed. Compared with the conventional single-ended detection, this signal processing method doubles the propagation distance and increases the SNR by more than 1 dB. In addition, this DSP method provides 10 dB of the received optical power dynamic range while operating below the hard-FEC BER threshold of 3.8\times 10^{-3}, compared with the no dynamic range for a single-ended receiver without the proposed DSP.
InP DP-IQM (left) schematic and (right) module.
Published in: IEEE Photonics Journal ( Volume: 8, Issue: 3, June 2016)
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