Suppression of relaxation oscillation in light output of injection lasers by electrical resonance circuit

Suematsu, Y.; Hong, Tchang-Hee

doi:10.1109/jqe.1977.1069614

Cited by 26 publications

(6 citation statements)

References 7 publications

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“…One can either use ac coupling or other devices that have the desired value of differential impedance around the bias point, but without effectively shorting the dc current. Since the impedance is essentially zero below the resonance frequency, the relaxation oscillations can be controlled, in principle, by connecting a resistor across the diode instead of a tuned circuit [ 7 ] .…”

Section: R To Rr/(r + R P ) Of Course Resistors That Are Of Practmentioning

confidence: 99%

The intrinsic electrical equivalent circuit of a laser diode

Katz

Margalit

Harder

et al. 1981

IEEE J. Quantum Electron.

109

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Section: R To Rr/(r + R P ) Of Course Resistors That Are Of Practmentioning

confidence: 99%

The intrinsic electrical equivalent circuit of a laser diode

Katz

Margalit

Harder

et al. 1981

IEEE J. Quantum Electron.

109

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“…The bit rate distance product is calculated to be B L = 0.58 Gbit/s · km (see (13)). However, the fiber dispersion at 1.55 μιη is larger than in the case of 1.3 urn.…”

Section: 55 μιη Led Systemmentioning

confidence: 99%

“…In the 1.55 μιη range the dispersion limitation calculated according to (13) is on the order of Β · L = 5.8 Gbit/s · km. The expected bit rate distance product caused by the mode partition noise is about 4.6 Gbit/s · km as computed from (27).…”

Section: 55 μιη Multimode Systemmentioning

confidence: 99%

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Optical Fiber Communication Systems and their Physical Limitation Effects

Mozer¹

1986

Journal of Optical Communications

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A conclusive analysis of a variety of optical transmission systems is presented. The influence of absorption losses, mode partition noise and dispersion on the properties of optical communication systems is discussed. Formulas for the maximum attainable bit rate distance product with respect to the limiting mechanisms are derived and evaluated. A comparison of the calculated values with experimental results of existing systems is given.

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“…But, the relaxation oscillations (ROs) produced by this method would cause an increasing bit error rate in optical communication [4]. To overcome the ROs, many techniques have been presented, including external electrical circuit [5], outside optical feedback [6], light injection [7], and the modification of the physical laser structure [8]. Compared with these methods, shaping current is easier to achieve and cheaper.…”

Section: Introductionmentioning

confidence: 99%

Parameter Selection of Direct Modulation Semiconductor Laser for Shaping Current Based on Convolutional Neural Network

et al. 2022

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The shaping current technology can efficiently and low-costly suppress the relaxation oscillations (ROs) of the direct modulation semiconductor laser (DML) for the high-performance optic system. The parameter selection is the key problem to precisely constructing the injection current form to obtain the desired output waveform. A novel framework based on convolutional neural network (CNN) is proposed to predict the shaped current parameters avoiding the time-consuming and computationally complex problems with analytical solutions. In the network training, batch and min-max normalizations are adopted to optimize neural networks, which aim to accelerate the convergence and improve their approximation ability. The trained inverse CNN named by feeding into the desired data samples from DML output waveform is used to achieve parameter selection for constructing the injection current. Also, the trained forward CNN would verify the validity of selected parameters responding to the output waveform, and get the unique corresponding relationship between them. Simulation results own high agreement with the theoretical values and show that the CNN models provide a powerful tool to select parameters of shaped current with accurate and fast capabilities.

show abstract

Suppression of relaxation oscillation in light output of injection lasers by electrical resonance circuit

Cited by 26 publications

References 7 publications

The intrinsic electrical equivalent circuit of a laser diode

The intrinsic electrical equivalent circuit of a laser diode

Optical Fiber Communication Systems and their Physical Limitation Effects

Parameter Selection of Direct Modulation Semiconductor Laser for Shaping Current Based on Convolutional Neural Network

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