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Signal gain saturation in two-channel common amplification using a 1.5μm InGaAsP travelling-wave laser amplifier

Signal gain saturation in two-channel common amplification using a 1.5μm InGaAsP travelling-wave laser amplifier

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© The Institution of Electrical Engineers
Published

Signal gain saturation and crosstalk characteristics in two-channel common amplification were investigated using a 1.5μm travelling-wave laser amplifier. Simultaneous amplification in the two channels causes gain saturation of the other, which results in an approximate 3 dB reduction in saturation output power. The total output power is confirmed to dominate the gain saturation in laser amplifiers.

Inspec keywords: semiconductor junction lasers; gallium compounds; indium compounds; gallium arsenide; crosstalk; III-V semiconductors

Other keywords: saturation output power; 1.5 micron; signal gain saturation; output power; semiconductor laser; two-channel common amplification; crosstalk characteristics; InGaAsP travelling wave laser amplifier

Subjects: Lasing action in semiconductors; Semiconductor lasers

References

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      • Braun, R.P., Ludwig, R., Molt, R.: `Ten-channel coherent optic fiber transmission using an optical traveling wave amplifier', ECOC '86, 22–25 September 1986, Barcelona, Spain, Postdeadline paper.
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      • Eisenstein, G., Hall, K.L., Jopson, R.M., Raybon, G., Whalen, M.S.: `Two-color gain saturation in an InGaAsP near-traveling-wave optical amplifier', Paper ThC4, OFC/IOOC '87, 19–22 Jaunary 1987, Reno, NA.
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      • T. Mukai , Y. Yamamoto , T. Kimura . S/N and error rate performance in AlGaAs semiconductor laser preamplifier and linear repeater systems. IEEE J. Quantum Electron. , 1560 - 1568
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      • K. Inoue , T. Mukai , T. Saitoh . Gain saturation dependence on signal wavelength in a travelling-wave semiconductor laser amplifier. Electron. Lett. , 328 - 329
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      • J.C. Simon . Polarisation characteristics of a travelling-wave-type semiconductor laser amplifier. Electron. Lett. , 438 - 439
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      • Saitoh, T., Mukai, T.: `Low-noise 1.5μm GaInAsP traveling-wave optical amplifier with high-saturation output power', Paper PD-5, 10th IEEE semiconductor laser conference, 14–17 October 1986, Kanazawa, Japan.
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      • I.D. Henning , M.J. Adams , J.V. Collins . Performance predictions from a new optical amplifier model. IEEE J. Quantum Electron. , 609 - 613
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