Control method and control system for compensating optical device tracking errors
A tracking error and control method technology, applied in the field of optical communication systems, can solve problems such as non-compliance with protocol requirements, large production loss, and inconsistency
Active Publication Date: 2020-06-23
山东华云光电技术有限公司
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Problems solved by technology
[0002] In the production process of Optical Sub-Assembly (OSA), tracking error (Tracking Error, TE) is an important index to evaluate its performance. When TE>±3dB, it does not meet the requirements of the agreement, nor can it meet the requirements of actual engineering use.
[0003] At present, the TE performance of OSA, especially the TE performance of single-fiber bidirectional optical sub-assembly (BOSA), is difficult to control, and there may be differences between different batches or even between different individuals in the same batch. big difference, no consistency
If the TE performance of the optical device is unqualified, the optical device will be scrapped and cannot be used, and the production loss will be very large
Method used
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[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.
[0029] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present invention, it should be noted that the terms "installation", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connec...
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The invention discloses a control method and a control system for compensating a tracking error of an optical device. The control method comprises the following steps: giving a first target optical power of the optical device at a first working temperature; acquiring the actual transmitting light power of the optical device; if the difference value between the actual transmitting optical power andthe first target optical power is greater than a preset power difference value, obtaining second target optical power according to the fact that the difference value between the actual transmitting optical power and the first target optical power is greater than the preset power difference value; and inputting the second target optical power to the automatic power control circuit so as to controlthe working current of the laser through the automatic power control circuit. The method has the advantage that the TE of the optical module can be controlled to be within the range of the protocol standard.
Description
Technical field [0001] The invention relates to an optical communication system, in particular to a control method and a control system for compensating the tracking error of an optical device. Background technique [0002] During the production process of Optical Sub-Assembly (OSA), Tracking Error (TE) is an important indicator to evaluate its performance. When TE>±3dB, it does not meet the requirements of the agreement and cannot meet the requirements of actual engineering use. . [0003] At this stage, the TE performance of OSA, especially the TE performance of single-fiber bi-directional optical devices (Bi-Directional Optical Sub-Assembly, BOSA) is difficult to control, and there may be differences between different batches or even between different individuals of the same batch. Big difference, no consistency. The unqualified TE performance of the optical device will cause the optical device to be scrapped and unusable, resulting in large production losses. Summary of t...
Claims
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Login to View More IPC IPC(8): H04B10/079
CPCH04B10/07955H04B10/0799
Inventor 李焕功
Owner 山东华云光电技术有限公司