Partition noise in semiconductor lasers under CW and pulsed operation

Jensen, Niels; Olesen, H.; Stubkjaer, K.E.

doi:10.1109/jqe.1987.1073196

Cited by 42 publications

(24 citation statements)

References 17 publications

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“…J is the pumping in electrons per second R ( N ) the total spontaneous recombination rate, r the mode confinement factor, 7p the photon lifetime, Pi the fraction of spontaneous emission coupled into mode i, and B the band-to-band recombination coefficient. The Langevin noise terms F N ( t ) and Fi ( t ) are implemented by generating a set of jointly Gaussian random numbers as described in detail in [3]. This procedure is valid for the typical time step of 5-10 ps.…”

Section: Theorymentioning

confidence: 99%

“…0733-8724/89/0400-0657$01 .OO O 1989 IEEE The gain Gi ( N ) is assumed to have a parabolic wavelength dependence but contrary to [3] the wavelength shift of the gain maximum X o ( N ) with carrier number (i.e., the band filling effect) is also taken into account. The nonlinear gain is implemented in a simplified form [9] and with the usual linear dependence on the carrier number the gain is given by where GN is a gain coefficient, No the carrier number at transparency, Xi the wavelength of the ith mode and AXG the width of the gain curve (FWHM).…”

Section: Theorymentioning

confidence: 99%

“…In both cases mode partition noise [ 11- [3], chirping [4], and reflection-induced noise [5]- [6] have been identified as factors limiting the transmission distance. Data links have special requirements such as extremely low bit error rate (BER) of or lower, inexpensive components, and many connectors in the transmission path [7].…”

Section: Introduction Igh Speed Optical Fiber Transmission Systemsmentioning

confidence: 99%

“…Mode partition noise arises due to random power fluctuations among longitudinal modes in a laser [3]. The fluctuations in the main and side modes are anticorrelated so that the total output fluctuations are significantly reduced.…”

Section: Introduction Igh Speed Optical Fiber Transmission Systemsmentioning

confidence: 99%

“…In an earlier paper [3] we presented a numerical model for simulation of mode partition noise in lasers under CW and pulsed operation. Here, we will describe how the model can be extended to include the effect of fiber dispersion and receiver low-pass filtering in order to predict the signal-to-noise ( S / N ) ratio and power penalty in a practical system.…”

Section: Introduction Igh Speed Optical Fiber Transmission Systemsmentioning

confidence: 99%

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Noise caused by semiconductor lasers in high-speed fiber-optic links

Olsen

Stubkjaer

Olesen³

1989

J. Lightwave Technol.

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Abstract-We present theoretical and experimental results for the signal-to-noise ( S / N ) ratio caused by mode partition noise, intensity noise, and reflection-induced noise in optical data links. Under given conditions an additional noise source with a S I N ratio of 20 dB will cause a power penalty of 1 dB in order to maintain a bit error rate. From our numerical simulations we predict the maximum allowable dispersion in the presence of mode partition noise to be approximately 40 percent of a clock period. This figure is almost independent of bit rate and laser structure and agrees well with our measurements and with results of other workers. Numerical simulations of a BH and a TJS laser were carried out at four bit rates from 565 Mbit/s to 4.5 Gbit/s and the measurements were done at 2.2 Gbit/s using a TJS laser.

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Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%