Journal article
Noise and regeneration in semiconductor waveguides with saturable gain and absorption
We have modeled the noise properties of a novel waveguide device with regenerative properties. The device consists of alternating sections of saturable gain and absorption, which give a nonlinear power transfer function. We investigate the relative intensity noise spectra and signal-to-noise ratio after the device by both a small-signal analysis and large-signal simulation, and we show that the gain saturation gives noise redistribution at the mark level.
We also examine the influence of the nonlinearity on the noise probability density function and show that the standard approximations of Gaussian and noncentral>tex/tex
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2004 |
| Pages: | 245-255 |
| ISSN: | 15581713 and 00189197 |
| Types: | Journal article |
| DOI: | 10.1109/JQE.2003.823035 |
| ORCIDs: | Mørk, Jesper |
Absorption Analytical models Gaussian approximation Gaussian distribution Gaussian noise Noise level Probability density function Semiconductor device noise Semiconductor waveguides Signal analysis Signal to noise ratio Transfer functions all-optical signal processing amplified spontaneous emission noise bit-error-rate estimation error statistics gain saturation intensity noise spectra large-signal simulation laser noise linear noise transfer noise probability density function noise properties noise redistribution noncentral distribution nonlinear power transfer function optical communication optical information processing optical saturable absorption optical transfer function optical waveguide theory probability regenerative properties regenerator cascade saturable absorption saturable gain semiconductor device models semiconductor optical amplifiers semiconductor waveguide noise semiconductor waveguide regeneration signal-to-noise ratio small-signal analysis static transfer functions waveguide device
