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A system for increasing extinction ratio and reducing driving voltage

A technology of driving voltage and extinction ratio, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems that the extinction ratio of the optical sending end will not be improved, and the extinction ratio of the sending end will decrease, so as to overcome the high driving voltage and voltage requirements The effect of lowering and greater flexibility

Active Publication Date: 2022-03-01
WUHAN POST & TELECOMM RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution can reduce the overall insertion loss of the modulator, the extinction ratio of the entire optical transmitting end will not be improved. On the contrary, the introduction of noise will make the extinction ratio of the transmitting end decrease to a certain extent.

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  • A system for increasing extinction ratio and reducing driving voltage

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them.

[0024] In this application, when it is described that a specific component is located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component; When a specific component is connected to other components, the specific component may be directly connected to the other component without an intermediate component, or may not be directly connected to the other component but has an intermediate component.

[0025] see figure 1 as shown, figure 1 It is a structural block diagram of the system for increasing the extinction ratio and reducing the driving...

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Abstract

The invention discloses a system for increasing the extinction ratio and reducing the driving voltage, and relates to the field of optical communication devices, including: an electro-optical modulator, which includes an electro-optic modulator input end, an electro-optic modulator output end, and an electro-optic modulator chip; The amplifier includes an optical amplifier input terminal and an optical amplifier input terminal, and the optical amplifier input terminal is connected to the output terminal of the electro-optic modulator; and an electric drive chip, which is used for synchronously driving the electro-optic modulator chip and the optical amplifier. The invention has the advantages of simple structure, easy mass production and low cost, and can increase the signal extinction ratio while reducing the driving voltage of the electro-optic modulator.

Description

technical field [0001] The invention relates to the field of optical communication devices, in particular to a system for increasing the extinction ratio and reducing the driving voltage. Background technique [0002] In the design of silicon optical modulators, it is necessary to ensure a good balance among the three parameters of bandwidth, insertion loss and half-wave voltage. [0003] In order to reduce the half-wave voltage, the length of the modulator needs to be increased, but the process of increasing the length of the modulator to reduce the half-wave voltage will bring problems in bandwidth and insertion loss. Increasing the length of the modulator increases the overall insertion loss and reduces the electro-optic bandwidth of the modulator. In practice, the efficiency of silicon optical modulators is generally low, so in order to ensure a sufficiently low half-wave voltage, its length must be about 4 mm. At this time, its bandwidth and insertion loss have become ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01G02F1/025
CPCG02F1/0121G02F1/025
Inventor 李淼峰肖希王磊张宇光
Owner WUHAN POST & TELECOMM RES INST CO LTD