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Dive into the research topics where M.C. Tatham is active.

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Featured researches published by M.C. Tatham.


IEEE Journal of Quantum Electronics | 1992

Resonance frequency, damping, and differential gain in 1.5 mu m multiple quantum-well lasers

M.C. Tatham; I. F. Lealman; Colin P. Seltzer; L.D. Westbrook; D. M. Cooper

A systematic investigation is presented into the intrinsic frequency response of quantum-well lasers, using parasitic-free relative intensity noise (RIN) measurements. There is shown to be a strong dependence of the resonance frequency on the number of quantum wells in the active region, originating from variations both in internal losses and in differential gain. The differential gain is found to have values higher than in corresponding bulk lasers, but only in devices with a large number of wells. The damping is also found to vary in a manner consonant with the changes in differential gain; however, comparison with bulk lasers indicates substantially stronger gain suppression in the quantum-well lasers studied. >


Electronics Letters | 1993

Compensation fibre chromatic dispersion by optical phase conjugation in a semiconductor laser amplifier

M.C. Tatham; G. Sherlock; L.D. Westbrook


Electronics Letters | 1995

40 Gbit/s transmission over 202 km of standard fibre using midspan spectral inversion

Andrew D. Ellis; M.C. Tatham; D.A.O. Davies; D. Nessett; D.G. Moodie; G. Sherlock


Electronics Letters | 1994

Demultiplexing using polarisation rotation in a semiconductor laser amplifier

D.M. Patrick; Andrew D. Ellis; D.A.O. Davies; M.C. Tatham; G. Sherlock


Electronics Letters | 1991

Frequency response and differential Gain in strained and unstrained InGaAs/InGaAsP quantum well lasers

M.C. Tatham; C.P. Seltzer; S.D. Perrin; D.M. Cooper


Electronics Letters | 1995

All-optical AND gate operating on 10 Gbit/s signals at the same wavelength using four-wave mixing in a semiconductor laser amplifier

D. Nesset; M.C. Tatham; D. Cotter


Electronics Letters | 1994

Transmission of 10 Gbit/s directly modulated DFB signals over 200 km standard fibre using mid-span spectral inversion

M.C. Tatham; X. Gu; L.D. Westbrook; G. Sherlock; D.M. Spirit


Electronics Letters | 1994

Degenerate wavelength operation of an ultrafast all-optical AND gate using four wave mixing in a semiconductor laser amplifier

D. Nesset; M.C. Tatham; L.D. Westbrook; D. Cotter


Electronics Letters | 1991

Zero-net-strain multiquantum well lasers

C.P. Seltzer; S.D. Perrin; M.C. Tatham; D.M. Cooper


Electronics Letters | 1992

Zero-net-strain and conventionally strained InGaAsP/InP multiquantum well lasers

C.P. Seltzer; S.D. Perrin; M.C. Tatham; D.M. Cooper

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