CN104868954A - Optical module receiver and 1*9 optical module - Google Patents
Optical module receiver and 1*9 optical module Download PDFInfo
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- CN104868954A CN104868954A CN201510307168.1A CN201510307168A CN104868954A CN 104868954 A CN104868954 A CN 104868954A CN 201510307168 A CN201510307168 A CN 201510307168A CN 104868954 A CN104868954 A CN 104868954A
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- optical module
- apd
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Abstract
The invention discloses an optical module receiver, comprising a boosted circuit, a limiting amplifier, and an avalanche photo diode (APD) device. The boosted circuit is connected with the APD device. The APD device is connected with the limiting amplifier. The optical module receiver is characterized by also comprising a bias voltage compensating circuit. The bias voltage compensating circuit is connected with the boosted circuit. The bias voltage compensating circuit uses a thermosensitive element to control the boosted circuit and is used for adjusting the voltage value output by the boosted circuit when the temperature of the APD element changes. The optical module receiver has low cost, stable performance, and a simple method. The invention also discloses a 1*9 optical module, comprising an optical module transmitter and also comprising the optical module receiver disclosed by the invention. The 1*9 optical module can support long distance (greater than 100KM) transmission.
Description
Technical field
The present invention relates to optical communication field, particularly a kind of optical module receiver and a kind of 1 × 9 optical module.
Background technology
APD(Avalanche Photo Diode avalanche photodide) be a kind of P-N junction type light detect diode, the avalanche multiplication effect that wherein make use of charge carrier amplifies photosignal to improve the sensitivity of detection, and this is just for remote (being greater than 100KM) transmission provides condition.
APD operationally needs to add larger reverse bias voltage Vbr, makes it reach avalanche multiplication effect.1 × 9 optical module generally is 3.3V or 5V and powers, and can not meet the high voltage required for APD device, therefore need booster circuit.In addition, the characteristic of APD device is along with the change of temperature, and Vbr corresponding with it also can change.In order to keep high sensitivity, during variations in temperature, the Vbr of bias voltage compensating circuit to APD device is needed to adjust.
The bias voltage compensating circuit that module is conventional on the market mostly now is and adopts microcontroller to provide the mode such as PWM or DAC voltage to booster circuit, during variations in temperature, by writing corresponding program, compensates Vbr.Make in this way, this mode can increase module cost on the one hand, owing to being program control, also may cause APD devices function unstable properties on the other hand, and adjustment method more complicated.
In addition, along with the range of application of optical fiber communication is more and more wider, the demand of optical module increases with it.1 × 9 optical module, because its structure is simple, cost is low, reliability high, is widely used in fiber optic communication field.
But 1 × 9 now conventional optical module, due to by factors such as price controls, is used for some low cost fields.These module receiving terminals adopt PIN(PIN photodiode mostly) device, therefore transmission range is most within 100km, when needs carry out more long range propagation time, substantially all can not meet the demands.
In sum, the bias voltage compensating circuit cost of prior art is higher, stability is not high, debugging complicated, and existing 1 × 9 optical module is difficult to realize long-distance transmissions simultaneously.
Summary of the invention
In order to solve these potential problems, to the object of the invention is to overcome in prior art existing above-mentioned deficiency, provide that a kind of cost is low, 1 × 9 optical module that stable performance, adjustment method simple optical module receiver and a kind of receiving terminal adopt optical module receiver of the present invention.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of optical module receiver, comprise booster circuit, clipping amplifier circuit, APD device, is characterized in that, also comprises bias voltage compensating circuit,
Described bias voltage compensating circuit adopts temperature-sensitive element to control described booster circuit, for adjusting the magnitude of voltage size of described booster circuit output when described APD component temperature changes to make described APD element manipulation under avalanche condition.
Further, described bias voltage compensating circuit comprises thermistor, bias voltage arranges resistance, and described thermistor and described bias voltage arrange resistor coupled in parallel;
Described bias voltage compensating circuit one end connects described booster circuit input, and the described bias voltage compensating circuit other end connects described booster circuit output.
Preferably, described bias voltage compensating circuit also comprises peripheral resistance, described thermistor and described bias voltage resistor coupled in parallel is set after with described peripheral resistant series.
Further, described bias voltage resistance is set resistance according to the reverse bias voltage Vbr parameter of described APD device through calculating.
A kind of 1 × 9 optical module, comprises optical module transmitter, also comprises the optical module receiver of foregoing invention.
Compared with prior art, beneficial effect of the present invention
1, a kind of optical module receiver of the present invention, adopt a kind of bias voltage compensating circuit to act on booster circuit for APD device and to afford redress voltage, this circuit cost is low, stable performance, adjustment method is simple.
2, a kind of 1 × 9 optical module receiving terminal of the present invention adopts APD device as receiving equipment, can realize remote (being greater than 100KM) transmission.
Accompanying drawing explanation
It is a kind of optical module theory diagram of the present invention shown in Fig. 1.
The physical circuit figure of bias voltage compensating circuit of the present invention shown in Fig. 2.
It is the structure chart of a kind of 1 × 9 optical module of the present invention shown in Fig. 3.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
Fig. 1 is a kind of optical module receiving terminal of the present invention, comprises booster circuit 1, limiting amplifier 3, APD device 2, and described booster circuit 1 connects described APD device 2, and described APD device 2 connects described limiting amplifier 3, also comprises bias voltage compensating circuit 4.
Described bias voltage compensating circuit adopts temperature-sensitive element to control described booster circuit, for adjusting the magnitude of voltage size of described booster circuit output when described APD component temperature changes to make described APD element manipulation under avalanche condition.
A kind of bias voltage compensating circuit of the present invention, compared with carrying out with the employing microcontroller of prior art the method that regulates, bias voltage compensating circuit structure of the present invention is simple, and debugging is simple, with low cost.
Concrete, in one embodiment, referring to Fig. 2, described bias voltage compensating circuit 4 comprises thermistor R1, bias voltage arranges resistance R2, peripheral resistance R3, and described thermistor R1 and described bias voltage are connected with described peripheral resistance R3 after arranging resistance R2 parallel connection;
Described bias voltage compensating circuit one end connects described booster circuit input, and the described bias voltage compensating circuit other end connects described booster circuit output.
The resistance that described bias voltage arranges resistance calculates according to the reverse bias voltage Vbr parameter process of described APD device.
Concrete, the reverse bias voltage Vbr parameter calculation formula that the device of described APD exported to by described booster circuit is as follows:
Wherein, Vref is booster circuit reference voltage, and R3 is peripheral resistance, and R1 is thermistor, and R2 is that bias voltage arranges resistance.
When learning the reverse bias voltage Vbr parameter of APD device, by above formula, because the resistance of booster circuit reference voltage level Vref, thermistor R1, the resistance of peripheral resistance R3 are all given in advance, therefore by inversion formula, the value that bias voltage arranges resistance R2 just can be calculated.
In actual production, the account form that bias voltage arranges resistance R2 resistance is diversified, one of them concrete computational methods is: automated software derives the reverse bias voltage Vbr parameter of APD device from database, the resistance of the resistance of booster circuit reference voltage level Vref, thermistor R1, peripheral resistance R3 is imported in automated software and carries out automation calculating, obtain the resistance of an accurate R2, technical staff then selects the element of corresponding specification to carry out the attachment of element according to the result of calculation of automated software.Above implementation method is simple to operation, is conducive to reducing costs.
The present invention adopts a kind of bias voltage compensating circuit to act on booster circuit for APD device and to afford redress voltage, its circuit structure is simple, debugging is simple, and cost is low, thus greatly reduce production cost, improve the stability of optical module, adjustment method is simple and convenient.
Be a kind of 1 × 9 optical module of the present invention shown in Fig. 3, comprise optical module transmitter, described optical module transmitter comprises, LD device 5, LD driving element 6, also comprise optical module receiver of the present invention, referring specifically to the optical module receiver shown in Fig. 1 and Fig. 2, no longer describe in detail herein.
A kind of 1 × 9 optical module receiving terminal of the present invention adopts APD device as receiving equipment, not only there is the advantage of optical module receiver of the present invention, the light being simultaneously a kind of P-N junction type due to APD detects diode, described 1 × 9 optical module receiving terminal adopts the avalanche multiplication effect of APD devices use charge carrier to amplify photosignal to improve the sensitivity of detection (sensitivity decides the length of transmission range, sensitivity is higher, transmission range is far away), this is just for remote (being greater than 100KM) transmission provides condition.
By reference to the accompanying drawings the specific embodiment of the present invention is described in detail above, but the present invention is not restricted to above-mentioned execution mode, in the spirit and scope situation of claim not departing from the application, those skilled in the art can make various amendment or remodeling.
Claims (5)
1. an optical module receiver, comprise booster circuit, limiting amplifier, APD device, described booster circuit connects described APD device, described APD device connects described limiting amplifier, it is characterized in that, also comprise bias voltage compensating circuit, described bias voltage compensating circuit connects described booster circuit;
Described bias voltage compensating circuit adopts temperature-sensitive element to control described booster circuit, for adjusting the magnitude of voltage size of described booster circuit output when described APD component temperature changes to make described APD element manipulation under avalanche condition.
2. a kind of optical module receiver according to claim 1, is characterized in that, described bias voltage compensating circuit comprises thermistor, bias voltage arranges resistance, and described thermistor and described bias voltage arrange resistor coupled in parallel;
Described bias voltage compensating circuit one end connects described booster circuit input, and the described bias voltage compensating circuit other end connects described booster circuit output.
3. a kind of optical module receiver according to claim 2, is characterized in that, described bias voltage compensating circuit also comprises peripheral resistance, described thermistor and described bias voltage resistor coupled in parallel is set after with described peripheral resistant series.
4. a kind of optical module receiver according to claim 2, described bias voltage arranges the resistance of resistance and the reverse bias voltage Vbr parameter correlation of described APD device.
5. 1 × 9 optical module, comprises optical module transmitter, it is characterized in that, also comprises the optical module receiver as described in one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307168.1A CN104868954A (en) | 2015-06-05 | 2015-06-05 | Optical module receiver and 1*9 optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307168.1A CN104868954A (en) | 2015-06-05 | 2015-06-05 | Optical module receiver and 1*9 optical module |
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| CN104868954A true CN104868954A (en) | 2015-08-26 |
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| CN201510307168.1A Pending CN104868954A (en) | 2015-06-05 | 2015-06-05 | Optical module receiver and 1*9 optical module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105827236A (en) * | 2016-03-09 | 2016-08-03 | 合肥汇芯半导体科技有限公司 | Circuit structure used for driving silicon-based avalanche photodiode |
| CN107306155A (en) * | 2016-04-20 | 2017-10-31 | 成都芯瑞科技股份有限公司 | 1 × 9 Ultra-Low Speed extra long distance optical module |
| CN111092651A (en) * | 2019-12-31 | 2020-05-01 | 深圳市欧深特信息技术有限公司 | Sensitivity debugging method and device for optical module |
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| CN201654588U (en) * | 2010-02-05 | 2010-11-24 | 中国计量学院 | Circuit for compensating temperature to bias voltage of avalanche photodiode |
| CN102255656A (en) * | 2011-06-16 | 2011-11-23 | 成都新易盛通信技术有限公司 | Optical network unit for passive optical network and signal processing method thereof |
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| CN203377886U (en) * | 2013-08-22 | 2014-01-01 | 成都新易盛通信技术股份有限公司 | 1*9 low rate optical module with DDM function |
| CN204615834U (en) * | 2015-06-05 | 2015-09-02 | 成都新易盛通信技术股份有限公司 | A kind of optical module receiver and a kind of 1 × 9 optical module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827236A (en) * | 2016-03-09 | 2016-08-03 | 合肥汇芯半导体科技有限公司 | Circuit structure used for driving silicon-based avalanche photodiode |
| CN107306155A (en) * | 2016-04-20 | 2017-10-31 | 成都芯瑞科技股份有限公司 | 1 × 9 Ultra-Low Speed extra long distance optical module |
| CN111092651A (en) * | 2019-12-31 | 2020-05-01 | 深圳市欧深特信息技术有限公司 | Sensitivity debugging method and device for optical module |
| CN111092651B (en) * | 2019-12-31 | 2022-10-21 | 深圳市欧深特信息技术有限公司 | Sensitivity debugging method and device for optical module |
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Application publication date: 20150826 |