Amplification device for amplifying signal in optoelectronic transceiver
A technology for amplifying equipment and amplifying signals, which is applied in the field of optical communication, and can solve the problems of reducing the reliability margin and service life of drive amplifiers, not allowing the maximum data rate or service life, reliability and life risks, etc.
Pending Publication Date: 2022-04-12
HUAWEI TECH CO LTD
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Problems solved by technology
[0016] As a result, the channel temperature of transistors constituting the amplifier module rises, leading to reliability and lifetime risks
In summary, adding resistors to extend the low cutoff frequency reduces the reliability margin and lifetime of the driving amplifier
[0017] Furthermore, previous work did not allow extending the low cutoff frequency of the driver amplifier without reducing the maximum data rate or lifetime of the driver amplifier itself.
Method used
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[0062] In the following description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration certain aspects of the invention. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description should not be taken in a limiting sense, since the scope of the invention is defined by the appended claims.
[0063] For example, it should be understood that a disclosure related to a described method may also apply to a corresponding device or system configured to perform the method, and vice versa. For example, if specific method steps are described, a corresponding device may include means for performing the described method steps, even if the means are not explicitly described or illustrated in the figures.
[0064] Furthermore, in the following detailed description and in th...
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An amplification device in an electro-optical receiver is used to amplify a signal. An amplification device for amplifying a signal having a DC signal component is provided that includes a coupling filter circuit having an input and an output. The coupling filter circuit attenuates a DC signal component of an input signal to obtain a filtered output signal. The coupling filter circuit includes: a first capacitor circuit connecting the input terminal to the output terminal, the first capacitor circuit including a first capacitor; a second capacitor circuit connected in parallel with the first capacitor circuit, the second capacitor circuit including a second capacitor, a first resistor, and a second resistor, the second capacitor, the first resistor, and the second resistor being connected in series; and a resistance circuit connected to the input terminal and the output terminal and including a third resistor connected to the input terminal and a fourth resistor connected to the output terminal. The amplifying device comprises an amplifying circuit connected to the output end, and the amplifying circuit amplifies the filtered signal.
Description
technical field [0001] The present invention generally relates to the field of optical communications. More specifically, the present invention relates to amplification devices within transceivers for amplifying signals for optical communication. Background technique [0002] In transmitters for optical communications, broadband driver amplifiers are used to boost the level of high-speed digital sources in order to provide enough power to properly drive electro-optical modulators. In this regard, an alternating current (AC) coupled connection is required between the high speed digital source and the driving amplifier to decouple the direct current (DC) voltage from the high speed digital source. [0003] Driver amplifiers with integrated AC-coupling have attracted much attention due to their significant reduction in module size, component count, and cost. Recently, the updated IEEE 802.3bs standard requires a low cutoff frequency below 300KHz instead of 1MHz in the old sta...
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IPC IPC(8): H03F1/56H03H7/06
CPCH03F1/56H03F2200/271H03H7/06H03F3/08H03F3/16H03F2200/165H04B10/60
Inventor 安东尼奥·穆西奥卢卡·皮亚宗
Owner HUAWEI TECH CO LTD