Burst optical signal receiving circuit and optical module
A technology for receiving circuits and light-emitting signals, which is applied in the field of optical communication, and can solve problems such as heavy output AC load, quality degradation of the output signal of the limiting amplifier 20, and impact on burst receiving sensitivity, so as to improve sensitivity and ensure signal transmission quality.
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[0017] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as recited in the appended claims.
[0018] For the 10G EPON symmetrical OLT optical module in the prior art, the upstream receiving mode is burst state, compatible with 10G / 1G, and the two rates share one APD and TIA, and the TIA access rate is 1.25G and 10.3125G LA respectively. Since the two LAs are in parallel state, compared with the TIA source end, the TIA output impedance does not match the source end and the TIA output AC load is...
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