Experimental Realisation of Single-Carrier Alamouti-Coded QPSK Using Frequency-Diverse Dual-Polarisation RF Pilot Tones

A novel DSP chain using a pair of frequency- and polarisation-diverse RF pilot tones is proposed for single-carrier Alamouti-coded QPSK signal detection. The system's tolerance to static and dynamic signal polarisation is experimentally evaluated, with sensitivity penalties ≤ 1.5 dB demonstrated.

[1]  Ricardo M. Ferreira,et al.  Coherent Access: A Review , 2017, Journal of Lightwave Technology.

[2]  Ali Shahpari,et al.  Coherent Ultra Dense WDM Technology for Next Generation Optical Metro and Access Networks , 2014, Journal of Lightwave Technology.

[3]  P Bayvel,et al.  Bidirectional wavelength-division multiplexing transmission over installed fibre using a simplified optical coherent access transceiver , 2017, Nature Communications.

[4]  David J. Ives,et al.  Technology Requirements for an Alamouti-Coded 100 Gb/s Digital Coherent Receiver Using 3 × 3 Couplers for Passive Optical Networks , 2018, IEEE Photonics Journal.

[5]  Idelfonso Tafur Monroy,et al.  Real-time 10Gbps Polarization Independent Quasicoherent Receiver for NG-PON2 Access Networks , 2018, 2018 Optical Fiber Communications Conference and Exposition (OFC).

[6]  Hadrien Louchet,et al.  DSP algorithms for recovering single-carrier Alamouti coded signals for PON applications. , 2016, Optics express.

[7]  E. Ciaramella,et al.  Coherent PON system with high-sensitivity polarization-independent receiver and no ADC/DSP , 2015, 2015 European Conference on Optical Communication (ECOC).

[8]  Victor Polo,et al.  Polarization independent single-PD coherent ONU receiver with centralized scrambling in udWDM-PONs , 2014, 2014 The European Conference on Optical Communication (ECOC).

[9]  Seb J. Savory,et al.  Polarization-Insensitive Single-Balanced Photodiode Coherent Receiver for Long-Reach WDM-PONs , 2016, Journal of Lightwave Technology.