CN107634806A - ONU receiving sensitivities optimization circuit based on BOB technologies - Google Patents
ONU receiving sensitivities optimization circuit based on BOB technologies Download PDFInfo
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- CN107634806A CN107634806A CN201711023303.5A CN201711023303A CN107634806A CN 107634806 A CN107634806 A CN 107634806A CN 201711023303 A CN201711023303 A CN 201711023303A CN 107634806 A CN107634806 A CN 107634806A
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Abstract
The invention discloses a kind of receiving sensitivity based on BOB technologies to optimize circuit, including MAC module circuit, PMD modular circuits and GPON BOSA modular circuits, the MAC module circuit connects PMD modular circuits, the PMD modular circuits connect GPON BOSA modular circuits, and the GPON BOSA modular circuits increase by one by 0R resistance（R1）With 0.1uF electric capacity（C2）The grounded circuit of composition, the grounded circuit are connected with the reception monitoring pin of optical device ROSA in GPON BOSA modular circuits, and the PMD modular circuits are connected with 470R resistance（R2）And electric capacity（C1）The grounded circuit of composition.The invention solves the problems, such as that current BOB receiving circuits are not high for the optical device suitability of different performance, the problem of overcoming for the performance relatively poor suitability received between optical device and drive circuit.
Description
Technical field
The present invention relates to photoelectric field, and in particular to the receiving sensitivity optimization circuit based on BOB technologies.
Background technology
In order to reduce BOSA costs, now using directly buying transmitting and the chip received, TO is then looked for encapsulate factory again
TO is packaged into, then TO is packaged into BOSA by Zai Zhao BOSA producers.The purchase cost of device is reduced with this.Although however,
The cost of so device is reduction of, but brings the link of many increase risks again simultaneously.Ensure the uniformity of device
And reliability, chip is just must assure that in fact, and TO encapsulation and BOSA encapsulation, each link meet to require.So also can
Increase the cost checked on and verified.But in fact illustrate, many device products are implicitly present in many bad and inconsistencies, lead
Cause production survey to go wrong high with model machine repair rate, while occur the product of many indexs device not up to standard and three warm packet losses again.
At present, find that the product of some producers appears in three temperature in verifying parts（-10℃ 25℃ 55℃）The situation of lower packet loss.Mesh
The basic condition of preceding test environment is exactly that ONU is registered on OLT, and ONU is in the big bag long dozen current test of near sensitivity.
Find the situation of packet loss occur when many products are tested under three temperature in test process, we, which the analysis found that, loses
The situation of bag occurs mainly in down direction, that is, belongs to receiving terminal at ONU ends.The TO structures of receiving terminal are furtherd investigate again
Into discovery, the chip that we receive TO is mainly what is be made up of PD+TIA.
The shortcomings that prior art, is：The hardware circuit that existing BOB is received is relatively single, for various optical devices
As the receiving device suitability in BOSA is not high.Will be relatively good for the relatively good optical device receiving sensitivity of newly energy, but it is right
In optical device poor-performing itself will can product index impact, so as to do not reach well adaptation and require.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of receiving sensitivity based on BOB technologies is excellent
Change circuit, the invention solves the problems, such as that current BOB receiving circuits are not high for the optical device suitability of different performance,
The problem of overcoming for the performance relatively poor suitability received between optical device and drive circuit.
The purpose of the present invention is achieved through the following technical solutions：
Receiving sensitivity optimization circuit based on BOB technologies, including MAC module circuit, PMD modular circuits and GPON BOSA
Modular circuit, the MAC module circuit connect PMD modular circuits, and the PMD modular circuits connect GPON BOSA modular circuits,
The GPON BOSA modular circuits increase a grounded circuit being made up of 0R resistance and 0.1uF electric capacity, the grounded circuit with
In GPON BOSA modular circuits optical device ROSA reception monitoring pin connection, the PMD modular circuits be connected with 470R resistance and
The grounded circuit of electric capacity composition.
As the further improvement of this programme, described C2 electric capacity is 0.1uF, is made up of 0R resistance and 0.1uF electric capacity
Grounded circuit provides a path for filtering out noise jamming in GPON BOSA receiving terminals.
As the further improvement of this programme, described PMD modular circuits are connected with EEPROM.
The beneficial effects of the invention are as follows：The invention solves light of the current BOB receiving circuits for different performance
The problem of device suitability is not high, overcome for the relatively poor suitability received between optical device and drive circuit of performance
The problem of.Our circuit design can be optimized based on the present invention, so as to preferably improve drive end to more optical device products
Suitability so that our product expanded scope, sun adjuster receiving sensitivity index request when selecting optical device BOSA
Scope reduces, and then reduces the cost and due to product excessively relies on unique device and brings risk problem.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
First, it is as follows that all kinds of titles write a Chinese character in simplified form as described herein are introduced：
TOSA：Light emission component；
ROSA：Light-receiving component；
BOSA：Light transmit-receive integrated component；
PMD：Physical medium is related；
MAC：Medium access control；
GPON：Gigabit passive optical network（Gigabit-Capable Passive Optical Network）.
As shown in figure 1, the receiving sensitivity optimization circuit based on BOB technologies, including MAC module circuit, PMD modular circuits
And GPON BOSA modular circuits, the MAC module circuit connect PMD modular circuits, the PMD modular circuits connect GPON
BOSA modular circuits, the GPON BOSA modular circuits increase by one and led to by the 0R resistance R1 and 0.1uF electric capacity C2 ground connection formed
Road, the grounded circuit are connected with the reception monitoring pin of optical device ROSA in GPON BOSA modular circuits, the PMD modular circuits
RSSI_in pins be grounded by electric capacity C1, receiving monitoring pin by resistance 470R resistance R2 and ROSA RSSI connects.
As the further improvement of this programme, the electric capacity C2 is 0.1uF, the ground connection being made up of 0R resistance R1 and electric capacity C2
Path provides a path for filtering out noise jamming in GPON BOSA receiving terminals.
As the further improvement of this programme, described PMD modular circuits are connected with EEPROM.
It is to suppress interference caused by driving chip by increasing resistance value to set and choose R2 main purposes；Set and select
The purpose for taking R1, C2 is mainly：A path for filtering out noise jamming is provided in BOSA receiving terminals.The former stresses drive end, after
Person emphasizes device end.
The principle of optimization method is exactly mainly to improve ONU receiving sensitivity by reducing noise jamming.By this
Method, original relatively poor device sensitivity can be improved about 2dbm.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, the exclusion to other embodiment is not to be taken as, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should be in the protection domain of appended claims of the present invention
It is interior.
Claims (3)
1. the receiving sensitivity optimization circuit based on BOB technologies, it is characterised in that：It is described optimization circuit include MAC module circuit,
PMD modular circuits and GPON BOSA modular circuits, the MAC module circuit connect PMD modular circuits, the PMD modules electricity
Road connects GPON BOSA modular circuits, and the GPON BOSA modular circuits increase by one by 0R resistance（R1）With 0. 1uF electric capacity
（C2）The grounded circuit of composition, the grounded circuit are connected with the reception monitoring pin of optical device ROSA in GPON BOSA modular circuits,
The PMD modular circuits are connected with 470R resistance（R2）And electric capacity（C1）The grounded circuit of composition.
2. the receiving sensitivity optimization circuit according to claim 1 based on BOB technologies, it is characterised in that：Described electricity
Hold（C2）For 0.1uF, by 0R resistance（R1）And electric capacity（C2）The grounded circuit of composition provides a filter in GPON BOSA receiving terminals
Except the path of noise jamming.
3. the receiving sensitivity optimization circuit according to claim 1 based on BOB technologies, it is characterised in that：Described PMD
Modular circuit is connected with EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711023303.5A CN107634806B (en) | 2017-10-27 | 2017-10-27 | ONU (optical network Unit) receiving sensitivity optimization circuit Based On BOB (BOB) technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711023303.5A CN107634806B (en) | 2017-10-27 | 2017-10-27 | ONU (optical network Unit) receiving sensitivity optimization circuit Based On BOB (BOB) technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107634806A true CN107634806A (en) | 2018-01-26 |
| CN107634806B CN107634806B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711023303.5A Active CN107634806B (en) | 2017-10-27 | 2017-10-27 | ONU (optical network Unit) receiving sensitivity optimization circuit Based On BOB (BOB) technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995360A (en) * | 2019-11-29 | 2020-04-10 | 四川天邑康和通信股份有限公司 | Receiving end hard pin connecting circuit based on 10G EPON ONU BOB optical module |
| CN114095115A (en) * | 2022-01-21 | 2022-02-25 | 绍兴中科通信设备有限公司 | BoB light cat automated production modulation system equipment |
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| CN110995360A (en) * | 2019-11-29 | 2020-04-10 | 四川天邑康和通信股份有限公司 | Receiving end hard pin connecting circuit based on 10G EPON ONU BOB optical module |
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| CN114095115A (en) * | 2022-01-21 | 2022-02-25 | 绍兴中科通信设备有限公司 | BoB light cat automated production modulation system equipment |
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| Publication number | Publication date |
|---|---|
| CN107634806B (en) | 2023-08-18 |
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