Advanced Modulation Formats for Transmission Systems

DQPSK has shown that multilevel modulation formats can enable new possibilities in optical communication systems. The paper presents several options to go to even more advanced formats using direct detection.

[1]  J. van Howe,et al.  Nonlinear crosstalk and compensation in QDPASK optical communication systems , 2004, IEEE Photonics Technology Letters.

[2]  Guifang Li,et al.  Direct-detection optical differential 8-level phase-shift keying (OD8PSK) for spectrally efficient transmission. , 2004, Optics express.

[3]  Y. Achiam,et al.  Transmission of 25-Gb/s RZ-DQPSK signals with 25-GHz channel spacing over 1000 km of SMF-28 fiber , 2003, IEEE Photonics Technology Letters.

[4]  J. Leibrich,et al.  Experimental investigation of receiver sensitivity of RZ-DQPSK modulation using balanced detection , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[5]  W. Rosenkranz,et al.  Investigation of Multilevel Phase and Amplitude Modulation Formats in Combination With Polarization Multiplexing up to 240 Gb/s , 2006, IEEE Photonics Technology Letters.

[6]  Hosung Yoon,et al.  Performance comparison of optical 8-ary differential phase-shift keying systems with different electrical decision schemes. , 2005, Optics express.

[7]  Alexei N. Pilipetskii,et al.  Chirped return-to-zero formats for ultra long-haul fiber communications , 2004 .

[8]  Guifang Li,et al.  Simplified receiver implementation for optical differential 8-level phase-shift keying , 2004 .

[9]  T. Tokle,et al.  Transmission of Multilevel 60 Gbit/s Polarization Multiplexed RZ-D8PSK using only 10 Gbit/s equipment , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[10]  W. Rosenkranz,et al.  32.1 Gbit/s InverseRZ-ASK-DQPSK Modulation with Low Implementation Penalty , 2006, LEOS 2006 - 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society.

[11]  Werner Rosenkranz,et al.  Comparison of six different RZ-DQPSK transmitter set-ups regarding their tolerance towards fibre impairments , 2005 .