Abstract

A novel device that converts the order of modes in an integrated-optic multimode waveguide was proposed and fabricated. The device consists of two mode splitters and tapered waveguides. Its operation at a wavelength of 1.55 µm was confirmed by observation of the output mode profiles. The cross talk measured by an indirect method was >10.2 dB. The excess loss with reference to a straight multimode waveguide was 1.5 dB, compared with the propagation loss of a straight multimode waveguide.

© 2003 Optical Society of America

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References

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  1. E. Kapon and R. N. Thurston, Appl. Phys. Lett. 50, 1710 (1987).
    [CrossRef]
  2. R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
    [CrossRef]
  3. G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
    [CrossRef]
  4. W. K. Burns and A. F. Milton, IEEE J. Quantum Electron. QE-11, 32 (1975).
    [CrossRef]
  5. A. F. Milton and W. K. Burns, IEEE J. Quantum Electron. QE-13, 828 (1977).
    [CrossRef]
  6. H. Kogelnik, in Guided-Wave Optoelectronics, T. Tamir, ed. (Springer-Verlag, Berlin, 1988), pp. 69–74.
  7. D. Yevick and B. Hermansson, Electron. Lett. 25, 461 (1989).
    [CrossRef]
  8. Y. Chung and N. Dagli, IEEE J. Quantum Electron. 26, 1335 (1990).
    [CrossRef]

1996 (1)

G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
[CrossRef]

1990 (1)

Y. Chung and N. Dagli, IEEE J. Quantum Electron. 26, 1335 (1990).
[CrossRef]

1989 (1)

D. Yevick and B. Hermansson, Electron. Lett. 25, 461 (1989).
[CrossRef]

1987 (2)

E. Kapon and R. N. Thurston, Appl. Phys. Lett. 50, 1710 (1987).
[CrossRef]

R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
[CrossRef]

1977 (1)

A. F. Milton and W. K. Burns, IEEE J. Quantum Electron. QE-13, 828 (1977).
[CrossRef]

1975 (1)

W. K. Burns and A. F. Milton, IEEE J. Quantum Electron. QE-11, 32 (1975).
[CrossRef]

Berends, J. H.

G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
[CrossRef]

Burns, W. K.

A. F. Milton and W. K. Burns, IEEE J. Quantum Electron. QE-13, 828 (1977).
[CrossRef]

W. K. Burns and A. F. Milton, IEEE J. Quantum Electron. QE-11, 32 (1975).
[CrossRef]

Chung, Y.

Y. Chung and N. Dagli, IEEE J. Quantum Electron. 26, 1335 (1990).
[CrossRef]

Dagli, N.

Y. Chung and N. Dagli, IEEE J. Quantum Electron. 26, 1335 (1990).
[CrossRef]

Hermansson, B.

D. Yevick and B. Hermansson, Electron. Lett. 25, 461 (1989).
[CrossRef]

Kapon, E.

E. Kapon and R. N. Thurston, Appl. Phys. Lett. 50, 1710 (1987).
[CrossRef]

R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
[CrossRef]

Kogelnik, H.

H. Kogelnik, in Guided-Wave Optoelectronics, T. Tamir, ed. (Springer-Verlag, Berlin, 1988), pp. 69–74.

Lambeck, P. V.

G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
[CrossRef]

Milton, A. F.

A. F. Milton and W. K. Burns, IEEE J. Quantum Electron. QE-13, 828 (1977).
[CrossRef]

W. K. Burns and A. F. Milton, IEEE J. Quantum Electron. QE-11, 32 (1975).
[CrossRef]

Silberberg, Y.

R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
[CrossRef]

Thurston, R. N.

R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
[CrossRef]

E. Kapon and R. N. Thurston, Appl. Phys. Lett. 50, 1710 (1987).
[CrossRef]

Veldhuis, G. J.

G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
[CrossRef]

Yevick, D.

D. Yevick and B. Hermansson, Electron. Lett. 25, 461 (1989).
[CrossRef]

Appl. Phys. Lett. (1)

E. Kapon and R. N. Thurston, Appl. Phys. Lett. 50, 1710 (1987).
[CrossRef]

Electron. Lett. (1)

D. Yevick and B. Hermansson, Electron. Lett. 25, 461 (1989).
[CrossRef]

IEEE J. Quantum Electron. (1)

R. N. Thurston, E. Kapon, and Y. Silberberg, IEEE J. Quantum Electron. QE-23, 1245 (1987).
[CrossRef]

IEEE J. Quantum Electron. (3)

W. K. Burns and A. F. Milton, IEEE J. Quantum Electron. QE-11, 32 (1975).
[CrossRef]

A. F. Milton and W. K. Burns, IEEE J. Quantum Electron. QE-13, 828 (1977).
[CrossRef]

Y. Chung and N. Dagli, IEEE J. Quantum Electron. 26, 1335 (1990).
[CrossRef]

J. Lightwave Technol. (1)

G. J. Veldhuis, J. H. Berends, and P. V. Lambeck, J. Lightwave Technol. 14, 1746 (1996).
[CrossRef]

Other (1)

H. Kogelnik, in Guided-Wave Optoelectronics, T. Tamir, ed. (Springer-Verlag, Berlin, 1988), pp. 69–74.

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Figures (5)

Fig. 1
Fig. 1

Mode-order conversion of a MOC in the middle of a multimode channel (TM polarization is omitted for clarity).

Fig. 2
Fig. 2

MOC: (a) structure of the device, (b) beam propagation along the device.

Fig. 3
Fig. 3

Structure of a multichannel branching waveguide. Depending on the propagation direction of the light, the waveguide acts as a mode splitter or a mode combiner.

Fig. 4
Fig. 4

MOC with a mode combiner (wi=5 µm, W=20 µm, L1=L6=5 mm, L2=L3=L5=9.8 mm, L4=1 mm, where L is length).

Fig. 5
Fig. 5

(a), (b), (c), (d) Measured output mode profiles of a MOC with a mode combiner when light was launched at ports A, B, C, and D of Fig. 4, respectively. (e), (f), (g), (h) Measured output mode profiles of a mode combiner when the light was launched at ports A, B, C, and D of Fig. 4, respectively.

Tables (1)

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Table 1 Results of Cross-Talk Measurementa

Equations (2)

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mm-1Δw<2w0<λ0/nc2-ns21/2,
ϕλg/2D,

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