Completely optical burst amplifier in optical network based on SOA intersecting gain modulation effect

A cross-gain modulation and amplifier technology, applied in the field of optical fiber, can solve problems such as complex feedforward and feedback circuits, insufficient response time, and signal processing lag

Inactive Publication Date: 2009-03-11
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] figure 2 The prior art shown in requires complex feedforward and feedback circuits rather than all-optical processing and amplification
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  • Completely optical burst amplifier in optical network based on SOA intersecting gain modulation effect
  • Completely optical burst amplifier in optical network based on SOA intersecting gain modulation effect
  • Completely optical burst amplifier in optical network based on SOA intersecting gain modulation effect

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Embodiment Construction

[0015] The invention provides an all-optical burst amplifier based on SOA cross gain modulation effect in a burst optical network. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Implementation example

[0017] The present invention provides an all-optical burst amplifier based on the SOA cross gain modulation effect in a burst optical network, such as Figure 4 As shown, the system includes an optical burst input signal 401, a DFB laser 402, a 3-dB coupler 403, an SOA 404, an EDFA 405, and an optical filter 406; wherein, the input burst signal and the continuous optical control signal generated by the local laser are simultaneously input In the SOA, due to the SOA cross-gain modulation effect, the control signal is converted into a burst signal complementary to the original input signal, so the total power of the two becomes basically constant, and the combined signal is input into the EDFA for amplification, wh...

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Abstract

The invention provides a full gloss burst amplifier based on the SOA cross gain modulation effect, which comprises a laser, an optical combiner, an SOA, an EDFA and an optical filter, wherein a burst signal is input and a local continuous control signal is input to the SOA, the control signal is converted to the burst signal relatively complemented with the original input signal because of the SOA cross gain modulation effect, so the total power of the control signal and the burst signal is changed to be basically constant, the mixed signal is input to the EDFA for amplifying, and the transient effect of the EDFA can be greatly restrained, thereby the burst signal without anamorphic magnification can be obtained after the mixed signal is filtered by the optical filter. The invention can be applied to the amplification of the optical burst signal in the optical fibre network and the restraining of the transient effect of the EDFA.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and relates to an all-optical burst amplifier, in particular to an all-optical burst amplification method and structure based on the SOA cross gain modulation effect in an optical network. Background technique [0002] Burst optical network is considered to be a promising technology in next generation all-optical network. In burst optical networks, data packets are framed into large burst packets for all-optical transmission on WDM channels. Optical amplifiers such as EDFA are used to compensate the optical fiber transmission loss in the network. However, traditional fiber amplifiers used in burst optical networks tend to exhibit transient response due to the dynamic characteristics of their own gain, that is, due to the long idle inter-packet interval in the burst signal, the EDFA transient effect will cause the burst packet Different parts of the circuit experience different gains, res...

Claims

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Application Information

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IPC IPC(8): H04B10/17H04B10/02H04B10/291
Inventor 曹孝元洪小斌伍剑徐坤左勇林金桐
Owner BEIJING UNIV OF POSTS & TELECOMM
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