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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 20, Iss. 4 — Apr. 1, 2002
  • pp: 675–

Multimode Interference Photonic Switches (MIPS)

Shuichi Nagai, Goh Morishima, Hirokazu Inayoshi, and Katsuyuki Utaka

Journal of Lightwave Technology, Vol. 20, Issue 4, pp. 675- (2002)


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Abstract

The switching characteristics of multimode interference photonic switches (MIPS) are analyzed by wide-angle finite difference beam propagation method (FD-BPM). As a result, it is found that the MIPS with a multimode interference (MMI) length of 599 µm can switch the output light polarization insensitively with a crosstalk of less than -20dB for a wavelength range of 70nm. These analyses show that the MIPS can also have a 3-dB coupler function. Experimentally,an InGaAsP/InP 1 × 2 MIPS with a thicker InP cladding layer was fabricated and exhibited switching operation with crosstalks of -8 dB and -10 dB at 0 and 20 mA current injections,respectively. For a 2 × 2 MIPS with a thinner InP cladding layer, better switching characteristics with a crosstalk of -13 dB and an extinction ratio of 17 dB were realized.

[IEEE ]

Citation
Shuichi Nagai, Goh Morishima, Hirokazu Inayoshi, and Katsuyuki Utaka, "Multimode Interference Photonic Switches (MIPS)," J. Lightwave Technol. 20, 675- (2002)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-20-4-675


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References

  1. P. A. Besse, E. Gini, M. Bachmann and H. Melchior, "New 2 ×2 and 1 ×3 multimode interference couplers with free section of power splitting ratios", J. Lightwave Technol., vol. 14, pp. 2286-2293, Oct. 1996.
  2. G. R. Hadley, "Wide-angle beam propagation using Padéapproximate operators", Opt. Lett., vol. 17, pp. 1743 -1745, Oct. 1992.
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  4. P. A. Besse, M. Bachmann, H. Melchior, L. B. Soldano and M. K. Smit, "Optical bandwidth and fabrication tolerances of multimode interference couplers", J. Lightwave Technol., vol. 12, pp. 1004-1009, June 1994.

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