70 Gbps 4-PAM and 56 Gbps 8-PAM Using an 850 nm VCSEL

We present 56 Gbps unequalized 8-pulse-amplitude-modulation (PAM) real-time transmission over 50 m of multimode fiber and 70 Gbps 4-PAM operation with offline equalization. FEC would be necessary in both schemes. The bit-rates are given taking into account the FEC overhead needed to reach a BER below 10-12. The experiments were performed with an 850 nm vertical cavity surface emitting laser with 20 GHz bandwidth and a 22 GHz photoreceiver. We show that 8-PAM modulation requires channel bandwidth comparable with the symbol rate to avoid excessive ISI penalty and that equalization of 4-PAM signal can significantly improve achievable bit-rates.

[1]  J. Gimlett,et al.  Dispersion penalty analysis for LED/single-mode fiber transmission systems , 1986, Journal of Lightwave Technology.

[2]  William H. Tranter,et al.  The performance of Reed-Solomon codes on a bursty-noise channel , 1995, IEEE Trans. Commun..

[3]  van den Hpa Henrie Boom,et al.  High-speed transmission over multimode fiber using discrete multitone modulation , 2008 .

[4]  A.M.J. Koonen,et al.  Discrete multitone modulation for high-speed data transmission over multimode fibers using 850-nm VCSEL , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[5]  P. Westbergh,et al.  37 Gbps transmission over 200 m of MMF using single cycle subcarrier modulation and a VCSEL with 20 GHz modulation bandwidth , 2010, 36th European Conference and Exhibition on Optical Communication.

[6]  Erik Agrell,et al.  Power efficient subcarrier modulation for intensity modulated channels. , 2010, Optics express.

[7]  I. White,et al.  Carrierless amplitude and phase modulation for low-cost, high-spectral-efficiency optical datacommunication links , 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.

[8]  D. G. Cunningham,et al.  40 Gb/s carrierless amplitude and phase modulation for low-cost optical datacommunication links , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[9]  P. Westbergh,et al.  32 Gb/s multilevel modulation of an 850 nm VCSEL for next-generation datacommunication standards , 2011, CLEO: 2011 - Laser Science to Photonic Applications.

[10]  Erik Agrell,et al.  Demonstration of 8-level subcarrier modulation sensitivity improvement in an IM/DD system , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[11]  P. Andrekson,et al.  30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[12]  Erik Agrell,et al.  Experimental comparison of modulation formats in IM/DD links. , 2011, Optics express.

[13]  I. White,et al.  Orthogonal multipulse modulation for next-generation datacommunication links , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[14]  Erik Agrell,et al.  Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems , 2011, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[15]  E. Hugues-Salas,et al.  First experimental demonstration of VCSEL-based realtime end-to-end 11.25Gb/s optical OFDM signal transmission over 800m MMFs , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[16]  R. Rodes,et al.  Half-cycle modulation for VCSEL based 6-Gbaud 4-QAM transmission over 1 km multimode fibre link , 2012 .

[17]  P. Andrekson,et al.  4-PAM for high-speed short-range optical communications , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[18]  P. Andrekson,et al.  Optimized lattice-based 16-level subcarrier modulation for IM/DD systems , 2012, 2012 38th European Conference and Exhibition on Optical Communications.

[19]  Erik Agrell,et al.  Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems , 2011, IEEE Transactions on Information Theory.

[20]  C. Neumeyr,et al.  100 Gb/s single VCSEL data transmission link , 2012, OFC/NFOEC.

[21]  P. Andrekson,et al.  60 Gbits error-free 4-PAM operation with 850 nm VCSEL , 2013 .

[22]  P. Westbergh,et al.  High-Speed Oxide Confined 850-nm VCSELs Operating Error-Free at 40 Gb/s up to 85$^{\circ}{\rm C}$ , 2013, IEEE Photonics Technology Letters.

[23]  Peter A. Andrekson,et al.  Comparison of Intersymbol Interference Power Penalties for OOK and 4-PAM in Short-Range Optical Links , 2013, Journal of Lightwave Technology.

[24]  J. Cartledge,et al.  Generation and Detection of a 56 Gb/s Signal Using a DML and Half-Cycle 16-QAM Nyquist-SCM , 2013, IEEE Photonics Technology Letters.

[25]  N. Chitica,et al.  25.78Gbps data transmission with 850nm multimode VCSEL packaged in QSFP form factor module , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[26]  P. Andrekson,et al.  35.2 Gbps 8-PAM transmission over 100 m of MMF using an 850 nm VCSEL , 2013 .

[27]  Alexander V. Rylyakov,et al.  64Gb/s transmission over 57m MMF using an NRZ modulated 850nm VCSEL , 2014, OFC 2014.

[28]  Abdullah S. Karar,et al.  100 Gb/s Intensity Modulation and Direct Detection , 2014, Journal of Lightwave Technology.

[29]  Peter A. Andrekson,et al.  70 Gbps 4-PAM and 56 Gbps 8-PAM Using an 850 nm VCSEL , 2015 .

[30]  F. Moore,et al.  Polynomial Codes Over Certain Finite Fields , 2017 .