A novel scheme for generation of 40Gb/s RZ/CSRZ-DPSK signals

We propose a novel scheme to generate return-to-zero differential phase-shift keyed (RZ-DPSK) and carrier-suppressed RZ-DPSK (CSRZ-DPSK) formats based on the differential Mach-Zehnder modulator (DMZM), which can adjust the operating point of the modulator and control chirp conditions easily. It is more cost-effective due to its simple configuration.

[1]  Ut-Va Koc,et al.  Combined effect of polarization-mode dispersion and chromatic dispersion on strongly filtered /spl pi//2-DPSK and conventional DPSK , 2004 .

[2]  Y.-H. Kao,et al.  Chirped RZ-DPSK based on single Mach-Zehnder modulator and its nonlinear transmission performance , 2005, IEEE Photonics Technology Letters.

[3]  A. Nirmalathas,et al.  RZ/CSRZ-DPSK and chirped NRZ signal generation using a single-stage dual-electrode Mach-Zehnder modulator , 2004, IEEE Photonics Technology Letters.

[4]  Xiang Liu,et al.  Analysis of intrachannel four-wave mixing in differential phase-shift keying transmission with large dispersion. , 2003, Optics letters.

[5]  N. S. Bergano,et al.  Comparison of CRZ, RZ and NRZ modulation formats in a 64 /spl times/ 12.3 Gb/s WDM transmission experiment over 9000 km , 2001, OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).

[6]  D. Penninckx,et al.  PMD second-order effects on pulse propagation in single-mode optical fibers , 1998, IEEE Photonics Technology Letters.

[7]  Y. Akasaka,et al.  DWDM 40G transmission over trans-pacific distance (10 000 km) using CSRZ-DPSK, enhanced FEC, and all-Raman-amplified 100-km UltraWave fiber spans , 2004, Journal of Lightwave Technology.

[8]  Yutaka Miyamoto,et al.  Reduction of nonlinear crosstalk by carrier-suppressed RZ format for 100 GHz-spaced Nx43-Gbit/s WDM in non-zero dispersion shifted band , 2001, Proceedings 27th European Conference on Optical Communication (Cat. No.01TH8551).

[9]  Yutaka Miyamoto,et al.  Carrier-suppressed differential phase shift keying format for ultra-high-speed channel transmission , 2002 .

[10]  G. Raybon,et al.  2.5 Tb/s (64/spl times/42.7 Gb/s) transmission over 40/spl times/100 km NZDSF using RZ-DPSK format and all-Raman-amplified spans , 2002, Optical Fiber Communication Conference and Exhibit.

[11]  Takashi Mizuochi,et al.  A comparative study of 10 Gb/s RZ-DPSK and RZ-ASK WDM transmission over transoceanic distances , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[12]  Hoon Kim,et al.  Degradations in balanced DPSK receivers , 2003, IEEE Photonics Technology Letters.

[13]  Hoon Kim,et al.  Chirp characteristics of dual-drive. Mach-Zehnder modulator with a finite DC extinction ratio , 2002, IEEE Photonics Technology Letters.

[14]  Alan H. Gnauck.  40-Gb/s RZ-differential phase shift keyed transmission , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[15]  Curtis R. Menyuk,et al.  Dynamics of the chirped return-to-zero modulation format , 2002 .