Abstract

We have investigated the polarisation-maintenance capability of 50µm graded-index multimode fibres (MMF) in the C-band. Using both circularly, and linearly polarisation-multiplexed signals centre-launched into the MMF, we found that orthogonality is sufficiently maintained in both cases to yield typically 10dB optical isolation between the channels. Using orthogonally circular polarisation-multiplexed signals, we show experimentally that two 3 and 5Gb/s data channels may be transmitted error free over 50µm multimode fibre spans up to 3km in length.

© 2003 Optical Society of America

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  1. The 10 Gigabit Ethernet standard, IEEE standard 802.3ae-2002.
  2. T. Kanada , “ Evolution of modal noise in multimode fibre-optic systems ,” J. Lightwave Technol.   2 , 11 – 18 ( 1984 ).
    [Crossref]
  3. T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
    [Crossref]
  4. T. E. Darcie ,“ Subcarrier multiplexing for multiple-access lightwave networks ,” J. Lightwave Technol.   5 , 1103 – 1110 ( 1987 ).
    [Crossref]
  5. P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
    [Crossref]
  6. E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).
  7. L. Yu and B.S. Rawat :“ Mode-coupling analysis of depolarization effects in a multimode optical fiber ,” J. Lightwave Technol.   10 , 556 – 562 ( 1992 ).
    [Crossref]
  8. P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
    [Crossref]
  9. R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
    [Crossref]
  10. E. Rochat , S.D. Walker , and M.C. Parker “ Ultra-wideband capacity enhancement of 50m multimode fibre links up to 3km using orthogonal polarisation transmission in C-band ,” paper 5.1.7, ECOC ’02 ( 2002 ).
  11. L. Raddatz , I. H. White , D. G. Cunningham , and M. C. Nowell : “ An Experimental and Theoretical Study of the Offset Launch Technique for the Enhancement of the Bandwidth of Multimode Fiber Links ,” J. Lightwave Technol.   16 , 324 – 331 ( 1998 ).
    [Crossref]

2002 (1)

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

1998 (2)

T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
[Crossref]

L. Raddatz , I. H. White , D. G. Cunningham , and M. C. Nowell : “ An Experimental and Theoretical Study of the Offset Launch Technique for the Enhancement of the Bandwidth of Multimode Fiber Links ,” J. Lightwave Technol.   16 , 324 – 331 ( 1998 ).
[Crossref]

1992 (1)

L. Yu and B.S. Rawat :“ Mode-coupling analysis of depolarization effects in a multimode optical fiber ,” J. Lightwave Technol.   10 , 556 – 562 ( 1992 ).
[Crossref]

1987 (1)

T. E. Darcie ,“ Subcarrier multiplexing for multiple-access lightwave networks ,” J. Lightwave Technol.   5 , 1103 – 1110 ( 1987 ).
[Crossref]

1984 (2)

T. Kanada , “ Evolution of modal noise in multimode fibre-optic systems ,” J. Lightwave Technol.   2 , 11 – 18 ( 1984 ).
[Crossref]

P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
[Crossref]

1981 (1)

R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
[Crossref]

Asakura, T.

P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
[Crossref]

Cunningham, D. G.

Darcie, T. E.

T. E. Darcie ,“ Subcarrier multiplexing for multiple-access lightwave networks ,” J. Lightwave Technol.   5 , 1103 – 1110 ( 1987 ).
[Crossref]

Dudley, S.

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Fercher, A.F.

P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
[Crossref]

Fox, J.

T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
[Crossref]

Giles, T.

T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
[Crossref]

Kanada, T.

T. Kanada , “ Evolution of modal noise in multimode fibre-optic systems ,” J. Lightwave Technol.   2 , 11 – 18 ( 1984 ).
[Crossref]

Kourtessis, P.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

MacGregor, A.

T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
[Crossref]

Nowell, M. C.

Parker, M. C.

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Parker, M.C.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , S.D. Walker , and M.C. Parker “ Ultra-wideband capacity enhancement of 50m multimode fibre links up to 3km using orthogonal polarisation transmission in C-band ,” paper 5.1.7, ECOC ’02 ( 2002 ).

Penty, R.

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Penty, R.V.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

Pleibel, W.

R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
[Crossref]

Quinlan, T.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Raddatz, L.

Rawat, B.S.

L. Yu and B.S. Rawat :“ Mode-coupling analysis of depolarization effects in a multimode optical fiber ,” J. Lightwave Technol.   10 , 556 – 562 ( 1992 ).
[Crossref]

Rochat, E.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

E. Rochat , S.D. Walker , and M.C. Parker “ Ultra-wideband capacity enhancement of 50m multimode fibre links up to 3km using orthogonal polarisation transmission in C-band ,” paper 5.1.7, ECOC ’02 ( 2002 ).

Steeger, P.F.

P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
[Crossref]

Stolen, R.H.

R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
[Crossref]

Wagner, R.E.

R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
[Crossref]

Walker, S. D.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Walker, S.D.

E. Rochat , S.D. Walker , and M.C. Parker “ Ultra-wideband capacity enhancement of 50m multimode fibre links up to 3km using orthogonal polarisation transmission in C-band ,” paper 5.1.7, ECOC ’02 ( 2002 ).

Webster, M.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

White, I.

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

White, I. H.

L. Raddatz , I. H. White , D. G. Cunningham , and M. C. Nowell : “ An Experimental and Theoretical Study of the Offset Launch Technique for the Enhancement of the Bandwidth of Multimode Fiber Links ,” J. Lightwave Technol.   16 , 324 – 331 ( 1998 ).
[Crossref]

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

Yu, L.

L. Yu and B.S. Rawat :“ Mode-coupling analysis of depolarization effects in a multimode optical fiber ,” J. Lightwave Technol.   10 , 556 – 562 ( 1992 ).
[Crossref]

Elect. Lett. (1)

P. Kourtessis , T. Quinlan , E. Rochat , S. D. Walker , M. Webster , I. White , R.V. Penty , and M.C. Parker , “ 0.6Tb/s-km Multimode Fibre Feasibility-Experiment using 40-Channel DWDM over Quadrature-Subcarrier Transmission ,” Elect. Lett.   38 , 813 – 815 ( 2002 ).
[Crossref]

Elect.Lett. (1)

R.E. Wagner , R.H. Stolen , and W. Pleibel : “ Polarization preservation in multimode fibers ,” Elect.Lett.   17 , 177 – 178 ( 1981 ).
[Crossref]

J. Lightwave Technol. (5)

L. Raddatz , I. H. White , D. G. Cunningham , and M. C. Nowell : “ An Experimental and Theoretical Study of the Offset Launch Technique for the Enhancement of the Bandwidth of Multimode Fiber Links ,” J. Lightwave Technol.   16 , 324 – 331 ( 1998 ).
[Crossref]

L. Yu and B.S. Rawat :“ Mode-coupling analysis of depolarization effects in a multimode optical fiber ,” J. Lightwave Technol.   10 , 556 – 562 ( 1992 ).
[Crossref]

P.F. Steeger , T. Asakura , and A.F. Fercher : “ Polarization preservation in optical fibers and its measurement by a speckle method ,” J. Lightwave Technol.   2 , 435 – 441 ( 1984 ).
[Crossref]

T. Kanada , “ Evolution of modal noise in multimode fibre-optic systems ,” J. Lightwave Technol.   2 , 11 – 18 ( 1984 ).
[Crossref]

T. E. Darcie ,“ Subcarrier multiplexing for multiple-access lightwave networks ,” J. Lightwave Technol.   5 , 1103 – 1110 ( 1987 ).
[Crossref]

Opt. Eng. (1)

T. Giles , J. Fox , and A. MacGregor , “ Bandwidth reduction in Gigabit ethernet transmission over multimode fiber and recovery through laser mode coupling ,” Opt. Eng.   37 , 3156 – 3160 ( 1998 ).
[Crossref]

Other (3)

The 10 Gigabit Ethernet standard, IEEE standard 802.3ae-2002.

E. Rochat , P. Kourtessis , M. Webster , T. Quinlan , S. Dudley , S. D. Walker , R. Penty , M. C. Parker , and I. H. White : “ Ultra-high capacity transmission over 3 km of legacy 50µm multimode-fibre using C-band HDWDM and quadrature-subcarrier multiplexing ,” paper 8.2.2, ECOC’02 ( 2002 ).

E. Rochat , S.D. Walker , and M.C. Parker “ Ultra-wideband capacity enhancement of 50m multimode fibre links up to 3km using orthogonal polarisation transmission in C-band ,” paper 5.1.7, ECOC ’02 ( 2002 ).

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Figures (7)

Fig. 1.
Fig. 1.

(a) Schematic of the orientations of the two polarisation multiplexed signals with respect to the PBS (the PBS is assumed aligned to the x-axis; (b) Polarisation ellipse at the output of 300m and (c) 3km of 50µm MMF for 2 orthogonal circular input SOP’s, as measured with a Stokes analyser.

Fig. 2.
Fig. 2.

Effect of orientation and orthogonality mismatch on channel cross-talk.

Fig. 3.
Fig. 3.

Poincar sphere representation of antipodal input and quasi-antipodal output polarisations before and after 3km of 50µm MMF.

Fig. 4.
Fig. 4.

Schematic diagram of experimental set-up for polarisation-multiplexed MMF transmission.

Fig. 5.
Fig. 5.

(a) Eye diagrams for the 3Gb/s circularly left polarised and (b) 5Gb/s circularly right polarised channels after polarisation demultiplexing at the end of a 300m sample of MMF.

Fig. 6.
Fig. 6.

(a) Eye diagrams for the 3Gb/s circularly left polarised and (b) 5Gb/s circularly right polarised channels after polarisation demultiplexing at the end of a 3km sample of MMF.

Fig. 7.
Fig. 7.

BER curves measured at 5Gb/s for a circular left polarised channel, with and without associated 3Gb/s orthogonally-polarised multiplexed channel.

Equations (1)

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Xt y = P 1 sin ( ψ Δδ 2 ) P 2 sin ( ψ + Δδ 2 ) , Xt x = P 2 cos ( ψ + Δδ 2 ) P 1 cos ( ψ Δδ 2 ) ,

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