Abstract

We present an experimental demonstration of the feasibility of in-band subcarrier multiplexing (SCM) for labeling of differential phase shift keying (DPSK) payload signals. We show that by proper selection of the value of the subcarrier frequency the effect of the superimposed SCM label on the performance of the DPSK signal is minimized. Furthermore, we show experimentally the advantages of using alternative modulation formats such as 16-QAM and multi-carrier SCM for optical labeling of a 10 Gb/s DPSK payload signal.

© 2006 Optical Society of America

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References

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  1. Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
    [CrossRef]
  2. X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
    [CrossRef]
  3. L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
    [CrossRef]
  4. A. H. Gnauck and P. J. Winzer, "Optical phase-shift-keyed transmission," J. Lightwave Technol. 23, 115-130 (2005).
    [CrossRef]
  5. M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
    [CrossRef]
  6. Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
    [CrossRef]
  7. J. G. Proakis, Digital Communications,( McGraw-Hill, third edition, 1995), sections 5-2-9 and 5-2-10.

2005 (2)

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

A. H. Gnauck and P. J. Winzer, "Optical phase-shift-keyed transmission," J. Lightwave Technol. 23, 115-130 (2005).
[CrossRef]

2004 (1)

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

2003 (1)

2001 (1)

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

2000 (1)

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Bachus, E.-J.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Cao, J.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Caspar, C.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Chi, N.

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

Giles, R. C.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Gnauck, A. H.

Hanik, N.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Heimes, N.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Hernandez, V. J.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Jeon, M. Y.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Kang, I.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Kao, Y.-H.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Konitzer, M.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Leuthold, J.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Liu, X.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Mørk, J.

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

Oxenløwe, L. K.

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

Pan, Z.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Rohde, M.

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Su, Y.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Tsui, V. K.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Wei, X.

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

Winzer, P. J.

Xu, L.

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

Yoo, J. B.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Yoo, S. J. B.

Zhu, Z.

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, and S. J. B. Yoo, "RF Photonics Signal Processing in Subcarrier Multiplexed Optical-Label Switching Communication Systems," J. Lightwave Technol.,  21, 3155-3166 (2003).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

Electron. Lett. (2)

M. Rohde, C. Caspar, N. Heimes, M. Konitzer, E.-J. Bachus, and N. Hanik, "Robustness of DPSK direct detection transmission format in standard fibre WDM systems," Electron. Lett. 36, 1483-1484 (2000).
[CrossRef]

Z. Zhu, V. J. Hernandez, M. Y. Jeon, J. Cao, Z. Pan, V. K. Tsui, and J. B. Yoo, "Simple, polarization-independent, and dispersion-insensitive SCM signal extraction technique for optical switching systems applications," Electron. Lett. 37, 1240-1241 (2001).
[CrossRef]

IEEE Photonics Technol. Lett. (2)

X. Liu, X. Wei, Y. Su, J. Leuthold, Y.-H. Kao, I. Kang, and R. C. Giles, "Transmission of an ASK-Labeled RZ-DPSK Signal and Label Erasure Using a Saturated SOA," IEEE Photonics Technol. Lett. 16, 1594-1596 (2004).
[CrossRef]

L. Xu, N. Chi, L. K. Oxenløwe, J. Mørk, s. Yu, and P. Jeppesen, "A Novel Orthogonal Labeling Scheme Based on a 40-Gb/s DPSK Payload and 2.5-Gb/s PolSK Label," IEEE Photonics Technol. Lett. 17, 2772-2774 (2005).
[CrossRef]

J. Lightwave Technol. (2)

Other (1)

J. G. Proakis, Digital Communications,( McGraw-Hill, third edition, 1995), sections 5-2-9 and 5-2-10.

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Figures (5)

Fig. 1.
Fig. 1.

Experimental setup. DFB: distributed feedback laser. EAM: electro-absorption modulator. DC: voltage generator. PM: phase modulator. PC: polarization controller. EDFA: erbium-doped fiber amplifier. OBPF: optical band-pass filter. VOA: variable optical attenuator. MZI: Mach-Zehnder interferometer.

Fig. 2.
Fig. 2.

Power penalty, with reference to the case of no label at a BER of 10-9, for the DPSK payload signal in presence of SCM tones at different frequencies. Open markers: simulation results. Solid markers: measurements. Insets: eye-diagrams of the detected DPSK signal, 50 ps/div.

Figure 3.
Figure 3.

BER as function of received optical power. Left: back-to-back case, presence of a single frequency tone at 5GHz and with 16-QAM, respectively. Right: back-to-back case, in presence of 5, and 7 carriers (10 MHz spacing), respectively.

Fig. 4.
Fig. 4.

16 QAM, 50 Mbps label performance in presence of DPSK payload. SNR and penalty (due to the presence of the DPSK signal) as a function of the optical received power. Insets: IQ diagrams for -30 dBm and - 2.3 dBm of optical received power.

Fig. 5.
Fig. 5.

Label performance at 5 GHz in absence and presence of DPSK payload: single carrier, 5 and 7 multi-carrier schemes (carrier spacing = 10MHz).

Equations (2)

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E ( t ) = P 0 [ 1 + m × lable ( t ) sin ( ω s t ) ] e i ϕ k
I ( t ) P 0 2 cos ( ϕ k 1 ϕ k ) [ 2 + m × lable ( t ) { sin ( ω s ( t τ ) ) + sin ( ω s t ) } ]

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