Negative voltage chip
A negative pressure and chip technology, applied in the field of optical communication, can solve the problems of low integration, occupying space of optical transceiver modules, and high cost, and achieves the effects of high integration, simplified circuit structure and low cost
Active Publication Date: 2013-02-27
SOURCE PHOTONICS CHENGDU
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Problems solved by technology
These two chips are not specially used in EML lasers. Now, some functions of each chip are used to provide a suitable working voltage for EML lasers. The cost is high and a matching circuit is required. The entire circuit structure is relatively complex and the integration level Low and takes up space in the optical transceiver module, which is not conducive to the miniaturization of the optical transceiver module
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[0015] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0016] Such as figure 1 As shown, the negative voltage chip of the present invention includes a negative voltage conversion circuit 1 for converting an input positive voltage into a negative voltage output with the same voltage value; and a negative voltage processing circuit 2 for receiving the output of the negative voltage conversion circuit 1 The negative voltage is calculated and processed under the action of an external input signal, and the negative voltage that meets the working conditions of the EML laser is output; wherein, the negative voltage conversion circuit 1 and the...
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Abstract
The invention discloses a negative voltage chip. The negative voltage chip comprises a negative voltage conversion circuit and a negative voltage processing circuit, wherein the negative voltage conversion circuit is used for converting an input positive voltage into a negative voltage with the same voltage value, and outputting the negative voltage; and the negative voltage processing circuit is used for receiving the negative voltage outputted by the negative voltage conversion circuit, calculating and processing the negative voltage under the action of an external input signal, and outputting a negative voltage meeting the work conditions of an EML (eroabsorption modulated laser), wherein the negative voltage conversion circuit and the negative voltage processing circuit are arranged in a same package. The negative voltage chip provided by the invention can be used specially for providing a work voltage for the EML in a light transceiver module, and has the advantages of high integration degree and low cost. The negative voltage chip does not need external excessive matched circuits so as to make room for integrating other function circuits in the light transceiver module, thereby simplifying the circuit structure for providing the work voltage for the EML in the light transceiver module.
Description
technical field [0001] The invention relates to the technical field of optical communication, in particular to a negative voltage chip that provides working voltage for an EML laser. Background technique [0002] In the field of optical communication, electro-absorption modulated laser (Electro-absorption Modulated Laser, EML) is used in high-speed, long-distance communication. EML laser integrates laser light source and electro-absorption external modulator on the same semiconductor chip. It has the advantages of low driving voltage, low power consumption, high modulation bandwidth, small size, and compact structure. It is more suitable for high-speed, long-term Distance transmission has been widely used in optical transceiver modules. Currently, two separate existing chips and corresponding matching circuits are used in the optical transceiver module to provide a suitable working voltage for the EML laser. These two chips are not specially used in EML lasers. Now, some f...
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Login to View More IPC IPC(8): G05F1/46H01S5/06
Inventor 汪国强彭奇
Owner SOURCE PHOTONICS CHENGDU