Abstract

We investigated an integrated optical modulator consisting of two Mach-Zehnder interferometers. The modulator can generate optical signals in various types of modulation formats, which have advantages for long-haul transmission, optical labeling, etc. By using a fabricated versatile optical modulator having traveling-wave electrodes designed for high-speed signals, we demonstrated generation of optical 40 Gb/s frequency-shift-keying signals, which can be demodulated by an optical filter. 80 Gb/s optical differential quadrature-shift-keying modulation was also demonstrated, where 40 Gb/s in-phase and quadrature data were, simultaneously, fed to the modulator.

© 2006 Optical Society of America

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  1. Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
    [CrossRef]
  2. A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
    [CrossRef]
  3. N. Yoshikane and I. Morita, "1.14 b/s/Hz spectrally efficient 50x85.4 Gb/s transmission over 300 km using copolarized RZ-DQPSK signals," J. Lightwave Technol. 23, 108-114 (2005).
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  8. T. Sakamoto, T. Kawanishi, T. Miyazaki, and M. Izutsu, "Novel modulation scheme for optical continuous-phase frequency-shift keying," OFC 2005 OFG2
  9. T. Sakamoto, T. Kawanishi, and M. Izutsu, "Optical minimum-shift-keying with external modulation scheme," Optics Express. 13, 7741-7747 (2005).
    [CrossRef] [PubMed]
  10. K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
    [CrossRef]
  11. M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
    [CrossRef]
  12. T. Kawanishi and M. Izutsu, "Linear single-sideband modulation for high-SNR wavelength conversion," Photon. Technol. Lett.,  16, 1534-1536 (2004).
    [CrossRef]
  13. D. D. Fonseca, P. Monteiro, A. V. T. Cartaxo, and M. Fujita, "Single sideband demonstration using a four phase-modulators structure," 2004 IEEE/LEOS Workshop on Advanced Modulation Formats FC2 (2004).
  14. J. J. Vegas Olmos, I. Tafur Monroy, and A. M. J. Koon, "High bit-rate combined FSK/IM modulated optical signal generation by using GCSR tunable laser sources," Opt. Express 11, 3136-3140 (2003).
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  15. K. Vlachos, J. Zhang, J. Cheyns, Sulur, Nan Chi, E. Van Breusegem, I. Tafur Monroy, J. G. L. Jennen, P. V. Holm-Nielsen, C. Peucheret, R. O’Dowd, P. Demeester, and A. M. J. Koonen, "An optical IM/FSK coding technique for the implementation of a label-controlled arrayed waveguide packet router," J. Lightwave Technol. 21, 2617-2628 (2003)
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  17. K. Ishida, K. Shimizu, T. Mizuochi, K. Motoshima, D. S. Ly-Gagnon, and K. Kikuchi, "Transmission of 20x20 Gb/s RZ-DQPSK signals over 5090 km with 0.53 b/s/Hz spectral efficiency," OFC 2004 FM2
  18. S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
    [CrossRef]
  19. M. J. Hao and S. B. Wicker, "Performance evaluation of FSK and CPFSK optical communication systems: a stable and accurate method," J. Lightwave Technol. 13, 1613-1623 (1995)
    [CrossRef]
  20. Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
    [CrossRef]
  21. K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
    [CrossRef]
  22. T. Kawanishi, T. Sakamoto M. Izutsu, K. Higuma, T. Fujita, S. Mori, S. Oikawa, and J. Ichikawa, "40Gbit/s versatile LiNbO3 lightwave modulator," ECOC 2005 Th2.2.6
  23. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
    [CrossRef]
  24. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
    [CrossRef]
  25. T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
    [CrossRef]

2006 (1)

T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
[CrossRef]

2005 (3)

2004 (3)

T. Kawanishi and M. Izutsu, "Linear single-sideband modulation for high-SNR wavelength conversion," Photon. Technol. Lett.,  16, 1534-1536 (2004).
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

2003 (3)

1999 (1)

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

1995 (2)

S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
[CrossRef]

M. J. Hao and S. B. Wicker, "Performance evaluation of FSK and CPFSK optical communication systems: a stable and accurate method," J. Lightwave Technol. 13, 1613-1623 (1995)
[CrossRef]

1986 (2)

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

1981 (1)

M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
[CrossRef]

Alam, M. S.

S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
[CrossRef]

Burrows, E.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Chandrasekhar, S.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Cheyns, J.

Doerr, C.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Fujita, T.

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Gangopadhyay, R.

S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
[CrossRef]

Gnauck, A. H.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Hao, M. J.

M. J. Hao and S. B. Wicker, "Performance evaluation of FSK and CPFSK optical communication systems: a stable and accurate method," J. Lightwave Technol. 13, 1613-1623 (1995)
[CrossRef]

Higuma, K.

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Hirano, A.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Ichikawa, J.

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Imai, T.

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

Iwashita, K.

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

Izutsu, M.

T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Sakamoto, T. Kawanishi, and M. Izutsu, "Optical minimum-shift-keying with external modulation scheme," Optics Express. 13, 7741-7747 (2005).
[CrossRef] [PubMed]

T. Kawanishi and M. Izutsu, "Linear single-sideband modulation for high-SNR wavelength conversion," Photon. Technol. Lett.,  16, 1534-1536 (2004).
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
[CrossRef]

Kawanishi, T.

T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Sakamoto, T. Kawanishi, and M. Izutsu, "Optical minimum-shift-keying with external modulation scheme," Optics Express. 13, 7741-7747 (2005).
[CrossRef] [PubMed]

T. Kawanishi and M. Izutsu, "Linear single-sideband modulation for high-SNR wavelength conversion," Photon. Technol. Lett.,  16, 1534-1536 (2004).
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Koon, A. M. J.

Leuthold, J.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Majumder, S. P.

S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
[CrossRef]

Matsumoto, T.

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

Mitomi, O.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Miyamoto, Y.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Morita, I.

Motosugi, G.

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

Mulvihill, G.

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

Murata, K.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

O’Dowd, R.

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

O’Duill, S.

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

Prati, G.

S. P. Majumder, R. Gangopadhyay,M. S. Alam, and G. Prati, "Performance of linecoded optical heterodyne FSK systems with nonuniform laser FM response," J. Lightwave Technol. 13, 628-638 (1995)
[CrossRef]

Raybon, G.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Sakamoto, T.

T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Sakamoto, T. Kawanishi, and M. Izutsu, "Optical minimum-shift-keying with external modulation scheme," Optics Express. 13, 7741-7747 (2005).
[CrossRef] [PubMed]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Sano, A.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Shikamura, S.

M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
[CrossRef]

Shinada, S.

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "High-speed optical FSK modulator for optical packet labeling," J. Lightwave Technol. 23, 87-94 (2005)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

Stulz, L.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Sueta, T.

M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
[CrossRef]

Tafur Monroy, I.

Toba, H.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Vegas Olmos, J. J.

Vlachos, K.

Wicker, S. B.

M. J. Hao and S. B. Wicker, "Performance evaluation of FSK and CPFSK optical communication systems: a stable and accurate method," J. Lightwave Technol. 13, 1613-1623 (1995)
[CrossRef]

Yonenaga, K.

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

Yoshikane, N.

Yu, Y.

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

Zhang, J.

Electron. Lett. (4)

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986).
[CrossRef]

Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320 Gbit/s (8x40 Gbit/s)WDM transmission over 367 km with 120 km repeater spacing using carrier-suppressed return-to-zero format," Electron. Lett. 35 (1999) 2041-2041
[CrossRef]

K. Iwashita, T. Imai, T. Matsumoto, and G. Motosugi, "400 Mbit/s optical FSK transmission experiment over 270 km of single-mode fibre," Electron. Lett. 22, 164-165 (1986)
[CrossRef]

T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, "LiNbO3 high-speed optical FSK modulator," Electron. Lett. 40, 691-692 (2004)
[CrossRef]

IEEE Photon. Technol. Lett. (1)

Y. Yu, G. Mulvihill, S. O’Duill, and R. O’Dowd, "Performance implications of wide-band lasers for FSK modulation labeling scheme," IEEE Photon. Technol. Lett. 16, 39-41 (2004)
[CrossRef]

IEICE Electron. Express (1)

T. Kawanishi, T. Sakamoto, and M. Izutsu, "Optical filter characterization by using optical frequency sweep technique with a single sideband modulator," IEICE Electron. Express 3, 34-38 (2006)
[CrossRef]

J. Lightwave Technol. (5)

J. Quantum. Electron. (1)

M. Izutsu, S. Shikamura, and T. Sueta, "Integrated optical SSB modulator/frequency shifter," J. Quantum. Electron. 17, 2225-2227 (1981).
[CrossRef]

Opt. Express (1)

Optics Express. (1)

T. Sakamoto, T. Kawanishi, and M. Izutsu, "Optical minimum-shift-keying with external modulation scheme," Optics Express. 13, 7741-7747 (2005).
[CrossRef] [PubMed]

Photon Technol. Lett. (1)

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25x 40-Gb/sCopolarized DPSK transmission over 12x100-km NZDF with 50-GHz channel spacing," Photon Technol. Lett. 15, 467-469 (2003).
[CrossRef]

Photon. Technol. Lett. (1)

T. Kawanishi and M. Izutsu, "Linear single-sideband modulation for high-SNR wavelength conversion," Photon. Technol. Lett.,  16, 1534-1536 (2004).
[CrossRef]

Other (9)

D. D. Fonseca, P. Monteiro, A. V. T. Cartaxo, and M. Fujita, "Single sideband demonstration using a four phase-modulators structure," 2004 IEEE/LEOS Workshop on Advanced Modulation Formats FC2 (2004).

A. H. Gnauck, P. J. Winzer, S. Chandrasekher, and C. Dorrer, "Spectrally efficient (0.8 b/s/Hz) 1-Tb/s (25x42.7 Gb/s) RZ-DQPSK transmission over 28 100-km SSMF spans with 7 optical add/drops," ECOC2004 PD, Th4.4.1

N. Kikuchi, S. Sasaki, K. Sekine, and T. Sugawara, "Investigation of cross phase modulation (XPM) effect on amplitude-and phase-modulated multi-level signals in dense-WDM transmission," OFC 2005, OWA4.

T. Miyazaki, Y. Awaji, Y. Kamio, and F. Kubota, "Field demonstration of 160-Gb/s OTDM signals using eight 20-Gb/s 2-bit/symbol channels over 200Km," OFC 2005 OFF1.

W. Idler, A. Klekamp, R. Dischler, and B. Wedding, "Advantages of frequency shift keying in 10-Gb/s systems," 2004 IEEE/LEOS Workshop on Advanced Modulation Formats FD3 (2004).

T. Sakamoto, T. Kawanishi, T. Miyazaki, and M. Izutsu, "Novel modulation scheme for optical continuous-phase frequency-shift keying," OFC 2005 OFG2

R. A. Griffin, "Integrated DQPSK transmitters," OFC 2005, OTuM1

K. Ishida, K. Shimizu, T. Mizuochi, K. Motoshima, D. S. Ly-Gagnon, and K. Kikuchi, "Transmission of 20x20 Gb/s RZ-DQPSK signals over 5090 km with 0.53 b/s/Hz spectral efficiency," OFC 2004 FM2

T. Kawanishi, T. Sakamoto M. Izutsu, K. Higuma, T. Fujita, S. Mori, S. Oikawa, and J. Ichikawa, "40Gbit/s versatile LiNbO3 lightwave modulator," ECOC 2005 Th2.2.6

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Figures (11)

Fig. 1.
Fig. 1.

Versatile modulator.

Fig. 2.
Fig. 2.

Frequency response.

Fig. 3.
Fig. 3.

Experimental setup for FSK modulation.

Fig. 4.
Fig. 4.

Optical spectra of frequency shifted signals.

Fig. 5.
Fig. 5.

40 Gb/s optical FSK signal, where frequency deviation was 80 GHz.

Fig. 6.
Fig. 6.

Spectra of demodulated optical FSK signal.

Fig. 7.
Fig. 7.

Eye diagrams of demodulated optical FSK signal.

Fig. 8.
Fig. 8.

Experimental setup for DQPSK modulation.

Fig. 9.
Fig. 9.

80 Gb/s optical FSK signal.

Fig. 10.
Fig. 10.

Eye diagrams of demodulated optical DQPSK signal.

Fig. 11.
Fig. 11.

BER curves of demodulated DQPSK signal.

Tables (1)

Tables Icon

Table 1. Modulation configurations for various formats.

Metrics