A qdsoa-based optical label and payload separator

A technology of optical tags and splitters, which is applied in optical fiber transmission, multiplexing system selection devices, electrical components, etc., can solve the problems of complex structure of processing modules and high requirements for timing accuracy, and achieve avoidance of impact, good opening, and The effect of simple structure

CN104506973BInactive Publication Date: 2017-10-31UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-10-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a QDSOA-based optical label and payload separator. On the one hand, the high-pass characteristic of the saturated QDSOA is used to filter (suppress) the low-frequency optical label in the optical packet to obtain the payload signal, that is, to erase the optical label. ; On the other hand, using the cross-gain modulation of QDSOA, the input wavelength is the continuous auxiliary light of λ2, which is modulated by the inverse signal of the optical group, and the optical label signal with the payload suppressed is obtained; finally, it is decomposed by the wavelength division multiplexer Reuse is separated. Experiments show that the present invention correctly realizes the separation of the optical label and the payload, and the separated label and payload have a high suppression ratio and a good opening degree of an eye diagram. In the structure of the present invention, the QDSOA is the center, and a semiconductor laser and two wavelength division multiplexers can be added to complete the separation. The structure is simple; at the same time, the separation is based on the modulation frequency of the optical label and the payload. The effect of sex on separation.
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Description

technical field

[0001] The invention belongs to the technical field of optical packet switching in optical fiber communication, and more specifically relates to a QDSOA-based optical label and payload separator. Background technique

[0002] Among the three optical switching forms of optical wavelength switching, optical burst switching and optical packet switching, optical packet switching has the smallest switching granularity and the highest statistical multiplexing rate, and is an ideal optical switching form.

[0003] Usually, an optical packet consists of two parts: an optical label and a payload. When the optical packet arrives at the switching node, the packet processing module first separates the optical label from the payload, wherein the optical label is sent to the label processing module, and the payload is sent to the switching module for switching. The label processing module recognizes the optical label, extracts the routing information, and then performs ro...

Examples

example

[0037] The following takes the input optical packet signal as an example of 2.5Gb / s optical label and 100Gb / s payload:

[0038] 1. Device selection

[0039] In the QDSOA-based optical label and payload separator of the present invention, the key components are selected as follows:

[0040] 1) Selection of QDSOA: the central working wavelength of QDSOA is 1550nm;

[0041] 2) Selection of the second wavelength division multiplexer WDM2: λ 1 1550nm, λ 2 1570nm;

[0042] 3) Selection of semiconductor laser LD: the center wavelength is 1570nm;

[0043] 4) Selection of low-pass filter LPF: the cut-off frequency is 2.5GHz.

[0044] 2. Build optical tags and payload separators

[0045] according to figure 1 And related descriptions, build optical tags and payload separators.

[0046] 3. Working parameter setting

[0047] The main working parameters of the optical tag and payload separator are set as shown in Table 1. The optical tag is modulated by 2.5Gb / s non-return-to-zero ...