A kind of low power consumption eml driving circuit and method
A driving circuit and low power consumption technology, which is applied in the field of optical communication, can solve problems such as difficult application, low efficiency of TEC power circuit, and power consumption reduction of EML driving circuit, so as to reduce power consumption, reduce TEC cooling current, and improve power supply The effect of using efficiency
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[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0035] In order to reduce the power consumption of the EML driving circuit, an embodiment of the present invention provides a low power consumption EML driving circuit and a method.
[0036] like figure 1 As shown, a low-power EML driving circuit provided by an embodiment of the present invention includes an electro-absorption modulation laser EML (abbreviated as EML), a DC voltage output terminal VDC of a fixed-output switching power supply DC / DCFIX and the electro-absorption modulation laser The ground signal connection of the laser EML, that is, the VDC voltage is used as the "virtual ground" of the EML component; the laser LD of the EML component is connected in series with the above-mentioned "virtual ground" and the main input power supply (nominal value) through a low-voltage drop bias current circuit 3.3V); the EA of the EML component i...
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