Use of superluminescent diodes in PFM optical video transmission

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Use of superluminescent diodes in PFM optical video transmission

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© The Institution of Electrical Engineers
Published

An 835 nm superluminescent diode with a spectral width of 8 nm is shown to reduce SNR fluctuations due to modal noise significantly in PFM optical video transmission. An SNR of 56 dB and DG/DP of 06%/0.3° are achieved over 5 km with a frequency deviation of only 400 kHz. The SNR fluctuation is less than 0.05 dB.

Inspec keywords: optical links; video signals; light emitting diodes; pulse frequency modulation; optical communication equipment; optical fibres

Other keywords: optical video transmission; superluminescent diodes; PFM; 835 nm; pulse frequency modulation; SNR fluctuations reduction; modal noise

Subjects: Modulation and coding methods; Light emitting diodes; Optical communication; Fibre optics; Television and video equipment, systems and applications

References

    1. 1)
      • T. Kanada , K. Hakoda , E. Yoneda . SNR fluctuation and nonlinear disortion in PFM optical NTSC video transmission systems. IEEE Trans. , 1868 - 1875
    2. 2)
      • M. Nakamura , K. Kaito , T. Ozeki . Modal noise reduced PFM transmission by monopulse to twin-pulse conversion. Electron. Lett. , 307 - 308
    3. 3)
      • M. Nakamura , N. Suzuki , Y. Uematsu , T. Ozeki , S. Takahashi . Laser linewidth requirement for eliminating modal noise in pulse frequency modulation video transmission. IEEE J. Light-wave Technol. , 735 - 740
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