CN102347584B - Method for stabilizing light eye diagram output by EML (equal matrix language) TOSA (transmitter optical subassembly) - Google Patents
Method for stabilizing light eye diagram output by EML (equal matrix language) TOSA (transmitter optical subassembly) Download PDFInfo
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- CN102347584B CN102347584B CN201110177788XA CN201110177788A CN102347584B CN 102347584 B CN102347584 B CN 102347584B CN 201110177788X A CN201110177788X A CN 201110177788XA CN 201110177788 A CN201110177788 A CN 201110177788A CN 102347584 B CN102347584 B CN 102347584B
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Abstract
The invention discloses a method for stabilizing a light eye diagram output by an EML (equal matrix language) TOSA (transmitter optical subassembly). According to the invention, the temperature compensation lookup table of the core temperature of TOSA is based on a module temperature as an index; and the temperature compensation lookup table of I_Bias current, I_Mod current, VEA bias and cross point of TOSA is based on the core temperature of TOSA as the index. In the invention, only the temperature compensation lookup table of the core temperature of TOSA is based on the module temperature as the index, and the temperature compensation lookup table of I_Bias current, I_Mod current, VEA bias and cross point of TOSA is based on the core temperature of TOSA as the index; and when the core temperature of TOSA fluctuates, the I_Bias current, I_Mod current, VEA bias and cross point are compensated along with the fluctuation of the core temperature of TOSA, and the light eye diagram output by the module is more stable.
Description
Technical field
The present invention relates to electronic information field, particularly relate to a kind of method of stable EML TOSA output light eye pattern.
Background technology
As shown in Figure 1, prior art is to the indexing means of the look-up table of the DIE Temperature of TOSA, I_Bias electric current, I_Mod electric current, VEA bias voltage, the crosspoint temperature-compensating when the module variations in temperature.The temperature-compensating look-up table in the DIE Temperature of TOSA, I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint is an index with the module temperature all in the prior art; In the prior art when module temperature fixedly the time; The DIE Temperature of EML TOSA can not in time compensate I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint when fluctuation is arranged, and will cause the light eye pattern of TOSA output unstable.
Summary of the invention
The present invention is in order to solve the above-mentioned problem that can not change colour temperature and brightness according to environmental information; A kind of method of stable EML TOSA output light eye pattern is provided; The temperature-compensating look-up table of the DIE Temperature of said TOSA is an index with the module temperature, and the temperature-compensating look-up table in the I_Bias electric current of said TOSA, I_Mod electric current, VEA bias voltage, crosspoint is an index with the DIE Temperature of TOSA.
According to embodiments of the invention, during the fluctuation of the DIE Temperature of said TOSA, I_Bias electric current, I_Mod electric current, VEA bias voltage and crosspoint are compensated in the time of will fluctuating with the DIE Temperature of TOSA.
According to embodiments of the invention; When TOSA is carried out temperature-compensating; Compensate according to the DIE Temperature of module operational environment temperature earlier, and then I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint are compensated according to the DIE Temperature of TOSA to TOSA.
Because there is relation in laser characteristic and laser works temperature (DIE Temperature), I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint.I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint that different DIE Temperatures is corresponding different, thus make laser output light characteristic best.Having only the temperature-compensating look-up table of the DIE Temperature of TOSA in the present invention is index with the module temperature; The temperature-compensating look-up table in I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint is an index with the DIE Temperature of TOSA then; When the DIE Temperature of TOSA fluctuates; I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint are compensated in the time of will fluctuating with the DIE Temperature of TOSA, and the light eye pattern of module output can be more stable.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the indexing means of the look-up table of existing temperature-compensating;
Fig. 2 is the indexing means of the look-up table of temperature-compensating of the present invention.
Embodiment
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Like Fig. 2 institute, the present invention is to the indexing means of the look-up table of the DIE Temperature of TOSA, I_Bias electric current, I_Mod electric current, VEA bias voltage, the crosspoint temperature-compensating when the module variations in temperature.Having only the temperature-compensating look-up table of the DIE Temperature of TOSA in the present invention is index with the module temperature; The temperature-compensating look-up table in I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint is an index with the DIE Temperature of TOSA then; When the DIE Temperature of TOSA fluctuates; I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint are compensated in the time of will fluctuating with the DIE Temperature of TOSA, and the light eye pattern of module output can be more stable.
When TOSA is carried out temperature-compensating; Compensate according to the DIE Temperature employing lookup table method of module operational environment temperature earlier TOSA; Be the DIE Temperature offset of the corresponding TO SA that stores in the index search form with module operational environment temperature promptly, wherein form is preprepared and is stored in the equipment; And then adopt the lookup table method to compensate to I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint according to the DIE Temperature of TOSA; Promptly the DIE Temperature with TOSA is the offset in I_Bias electric current in the index search form, I_Mod electric current, VEA bias voltage, crosspoint, and wherein form is to be ready in advance and to be stored in the equipment.
Because there is relation in laser characteristic and laser works temperature (DIE Temperature), I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint.I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint that different DIE Temperatures is corresponding different, thus make laser output light characteristic best.Having only the temperature-compensating look-up table of the DIE Temperature of TOSA in the present invention is index with the module temperature; The temperature-compensating look-up table in I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint is an index with the DIE Temperature of TOSA then; When the DIE Temperature of TOSA fluctuates; I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint are compensated in the time of will fluctuating with the DIE Temperature of TOSA, and the light eye pattern of module output can be more stable.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (1)
1. the method for a stable EML TOSA output light eye pattern; It is characterized in that; The temperature-compensating look-up table of the DIE Temperature of said TOSA is an index with the module temperature, and the temperature-compensating look-up table in the I_Bias electric current of said TOSA, I_Mod electric current, VEA bias voltage, crosspoint is an index with the DIE Temperature of TOSA; When the DIE Temperature of said TOSA fluctuateed, I_Bias electric current, I_Mod electric current, VEA bias voltage and crosspoint were compensated in the time of will fluctuating with the DIE Temperature of TOSA; When TOSA is carried out temperature-compensating, compensate according to the DIE Temperature of module operational environment temperature earlier, and then I_Bias electric current, I_Mod electric current, VEA bias voltage, crosspoint are compensated according to the DIE Temperature of TOSA to TOSA.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110177788XA CN102347584B (en) | 2011-06-29 | 2011-06-29 | Method for stabilizing light eye diagram output by EML (equal matrix language) TOSA (transmitter optical subassembly) |
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| CN201110177788XA CN102347584B (en) | 2011-06-29 | 2011-06-29 | Method for stabilizing light eye diagram output by EML (equal matrix language) TOSA (transmitter optical subassembly) |
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| CN102347584B true CN102347584B (en) | 2012-10-31 |
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| CN104734004B (en) * | 2013-01-06 | 2017-09-22 | 青岛海信宽带多媒体技术有限公司 | Generate the method and device of temperature lookup table of optical module |
| CN104821478B (en) * | 2015-05-31 | 2019-02-01 | 厦门大学 | A kind of optical module integrated sends the automatic debug circuit of light eye figure |
| CN109449727B (en) * | 2018-12-26 | 2020-11-10 | 东莞铭普光磁股份有限公司 | Optical module parameter configuration method, device, equipment and storage medium |
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| GB2432037B (en) * | 2005-11-01 | 2011-04-20 | Agilent Technologies Inc | A method and system for stabilizing operation of laser sources |
| CN101465515B (en) * | 2008-12-26 | 2010-12-01 | 中兴通讯股份有限公司 | Debugging apparatus and method based on chirp management laser |
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