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Spurious-free dynamic range of linewidth-insensitive coherent AM analogue optical links

Spurious-free dynamic range of linewidth-insensitive coherent AM analogue optical links

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The Letter shows that externally-modulated coherent AM optical links are limited by the third-order nonlinearity of the electrooptical modulator (EOM) and the EOM nonlinearity reduces the dynamic range by 5–19 dB from the theoretical limit. When the received optical power is less than ̃1 mW, these links have a better dynamic range than conventional direct detection links.

References

    1. 1)
      • G.E. Betts , L.M. Johnson , C.H. Cox . High-dynamic range, low noise analog optical links using external modulators: analysis and demonstration. SPIE High-Frequency Analog Fiber Systems , 252 - 257
    2. 2)
      • B.H. Kolner , D.W. Dolfi . Intermodulation distortion and compression in an integrated electroopticmodulator. Appl. Opt. , 3676 - 3680
    3. 3)
      • T.K. Fong , D.J.M. Sabido , L.G. Kazovsky . Linewidth-insensitive coherent AM analog optical links using semiconductor lasers. IEEE Photonics Technol. Lett. , 469 - 471
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