Linearisation of optical transmitters by a quasifeedforward compensation technique

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Linearisation of optical transmitters by a quasifeedforward compensation technique

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© The Institution of Electrical Engineers
Published

A quasifeedforward linearisation scheme is described suitable for linearisation of optical transmitters using GaAlAs double heterostructure Burrus-type light emitting diodes. Experimentally, an improvement was observed of, respectively, 33 dB and 17 dB in 2nd and 3rd order distortion for a figure of −70 dB down on fundamental at 100 mA d.c, 100 mA peak-to-peak modulation currents.

Inspec keywords: optical modulation; optical communication equipment; light emitting diodes

Other keywords: GaAlAs DH Burrus type LEDs; quasifeedforward compensation technique; optical transmitters; quasifeedforward linearisation scheme; light emitting diodes

Subjects: Light emitting diodes; Optical communication

References

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      • Szentesi, O.I., Szanto, A.J.: `Fiber optics video transmission', Presented at SPIE/SPSE Technical Symposium East, March 1976, Reston, Va..
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      • C.A. Burrus , E.A. Ulmer . Efficient small-area GaAs–Ga1−xAlxAs heterostructure electroluminescent diodes coupled to optical fibers. Proc. IEEE , 1263 - 1264
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      • Szanto, A., Taylor, J.C.W.: `An optical system for wideband transmission', Proceedings of the International Conference on Communications, June 1974, Minneapolis, p. 17E1–17E3.
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      • L.A. Marvin , C.K. Kao . Fiber optics links: CATV system design for the future. TV Commun. , 20 - 25
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      • Straus, J., Szentesi, O.I.: `Linearity of high power radiance Ga', Technical Digest, 1975 International Electron Devices Meeting, December 1975, Washington, DC, p. 484–486.
    6. 6)
      • Straus, J., Szentesi, O.I.: `Linear transmitters for fiber optic communications using high radiance LEDs', Technical Digest, Second European Conference on Optical Fibre Communication, September 1976, Paris, p. 209–212.
    7. 7)
      • King, F.D., Springthorpe, A.J., Szentesi, O.I.: `High power long-lived double heterostructure l.e.d.s for optical communications', Technical Digest, 1975 International Electron Devices Meeting, December 1975, Washington, DC, p. 480–483.
    8. 8)
      • T. Ozeki , E.H. Hara . Measurement of nonlinear distortion in light emitting diodes. Electron. Lett. , 78 - 80
    9. 9)
      • Pan, J.J.: `High performance wideband fiber optic repeater its application', Proceedings of the International Conference on Optical Fibre Communications, September 1975, London, p. 141–143.
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