2.5 Gbps CMOS laser diode driver with APC and digitally controlled current modulation

Lin, Chih-Hsien; Yao, I-Chen; Kuo, Chun-Cheng; Jou, Shyh-Jye

doi:10.1109/apasic.2002.1031536

Cited by 10 publications

(2 citation statements)

References 3 publications

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“…The LED forward current is constant, but when the temperature is increased that the light emitting diode photo power is decrease. For reaching a stable control, the traditional electric circuit include a photo detector and drive current adjustment electric circuit [4,5]. But have no photo detector in the traditional electric circuit only cannot operate, so this circuit design for the other circuits is not using the photo detectors, Use the characteristic of the LED voltage and the temperature to compensate the LED characteristic [6].…”

Section: Introductionmentioning

confidence: 99%

Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode

Sun

2013

AMM

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This paper designs an automatic spectrum control circuit when the temperature change the LED spectrum can maintain stably. Automatic spectrum control circuit has two control modes, one kind for red LED another kind for green and blue LED. When temperature increases that the LED spectrum are all toward long wavelength shift. When LED current increases, the R-LED spectrum to the long wavelength shift, the GB-LED spectrum to the short wavelength shift, so at R-LED is to reduce the current as the automatic spectrum control circuit and the GB-LED is to increase the current as the automatic spectrum control circuit. It is confirmed that the proposed system provides stable spectrum within a temperature range of 10°C at R-LED and a temperature range of 70°C at GB-LED.

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Section: Introductionmentioning

confidence: 99%

Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode

Sun

2013

AMM

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“…The current (bias current) just slightly above its threshold. For power of the laser diode varies with temperature and age burst mode, there will be a period where there is no incoming [3][4][5]. From the feedback of a photodiode, the APC will adjust data.…”

mentioning

confidence: 99%