CN202696617U - Optical transmitter with self power detection - Google Patents
Optical transmitter with self power detection Download PDFInfo
- Publication number
- CN202696617U CN202696617U CN 201220398720 CN201220398720U CN202696617U CN 202696617 U CN202696617 U CN 202696617U CN 201220398720 CN201220398720 CN 201220398720 CN 201220398720 U CN201220398720 U CN 201220398720U CN 202696617 U CN202696617 U CN 202696617U
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- light source
- driver
- power
- controller
- optical
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Abstract
The utility model discloses an optical transmitter with self power detection. The optical transmitter comprises a digital signal processor, a light source generator, an optical modulator and a power controller, wherein the light source generator comprises a driver and a light source, output of the digital signal processor is connected to the driver via a D/A converter, the driver is connected to a control terminal of the light source, optical signals outputted by the light source are modulated by the optical modulator and then transmitted to an optical cable, and the power controller comprises a PD detector which is arranged close to the light source and a controller which is connected to driver. The optical transmitter with self power detection has the advantages that the power controller is arranged to monitor the output power of the light source; when the output power of the light source reduces, the driver is adjusted to ensure that the output power of the light source is stable, thereby ensuring that optical signals outputted by the optical transmitter are stable.
Description
Technical field
The utility model relates to a kind of optical transceiver, particularly relates to a kind of power self check photometry transmitter.
Background technology
The effect of optical sender is that the HDB3 letter code conversion that will send here from multiplexing equipment becomes the NRZ code; Then the NRZ code is compiled the pattern for being adapted at transmitting on the lightguide cable link; Carrying out electricity/light conversion at last, convert the electrical signal to light signal and coupled into optical fibres, it generally is made of input interface, light source, drive circuit, optical modulator etc., in digital communication, input circuit carries out shaping with the signal (such as the PCM pulse) of input, pass through the drive circuit light source after being transformed into the pattern that is suitable for the circuit transmission, perhaps deliver to the continuous light wave of light modulator modulates light source output.
The core of optical sender is light source and drive circuit, and when light source was long in the operating time, the luminous power of output can reduce, and causes the light signal of output unstable.
The utility model content
The purpose of this utility model namely is to overcome the deficiency of present technology, and a kind of power self check photometry transmitter is provided, and solves the existing unsettled defective of optical sender output optical signal.
The utility model is achieved through the following technical solutions: power self check photometry transmitter, comprise digital signal processor, light source generator, optical modulator and power controller, described light source generator comprises driver and light source, the output of described digital signal processor is connected to driver by a D/A converter, described driver is connected to the control end of light source, the light signal of light source output is transported to after by light modulator modulates and transmits optical cable, described power controller comprises PD detector and controller, described controller is connected to driver, described PD detector be arranged on light source near.
Described PD detector is PIN diode.
Also be connected with a No Light Alarm device on the described PD detector.
The beneficial effects of the utility model are: a power controller is set, be used for the power output of monitoring light source, when light source output power reduces, its driver regulated, guarantee the stable of light source output power, thereby the light signal of assurance optical sender output is stable.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit diagram of light source generator;
Fig. 3 is the circuit diagram of power controller.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but structure of the present utility model is not limited only to following examples:
[embodiment]
As shown in Figure 1, power self check photometry transmitter, comprise digital signal processor, light source generator, optical modulator and power controller, described light source generator comprises driver and light source, the output of described digital signal processor is connected to driver by a D/A converter, described driver is connected to the control end of light source, the light signal of light source output is transported to after by light modulator modulates and transmits optical cable, described power controller comprises PD detector and controller, described controller is connected to driver, described PD detector be arranged on light source near.
Described PD detector is PIN diode.
Also be connected with a No Light Alarm device on the described PD detector.
Digital signal processor of the present utility model adopts the on-the-spot LSI that can edit gate array FPGA or special use.The circuit diagram of light source generator as shown in Figure 2, the circuit diagram of power controller is as shown in Figure 3.
Operation principle of the present utility model: data are inputted from digital signal processor, digital signal processor produces according to the input data and drives signal, D/A converter converts the driving signal that digital signal processor produces to analog drive signal, send to light source generator, driver sends a prebias current drives light source and produces light signal in the light source generator, by sending to the transmission optical cable after the light modulator modulates.
The PD detector subtend light source of power controller detects signal and sends to controller and No Light Alarm device, is provided with comparison circuit in the controller, according to the signal that the PD detector is delivered to, bias current is regulated, thereby so that light source output power keeps stable; The No Light Alarm device namely can send warning signal when not receiving signal, remind the staff.
Claims (3)
1. power self check photometry transmitter, it is characterized in that: comprise digital signal processor, light source generator, optical modulator and power controller, described light source generator comprises driver and light source, the output of described digital signal processor is connected to driver by a D/A converter, described driver is connected to the control end of light source, the light signal of light source output is transported to after by light modulator modulates and transmits optical cable, described power controller comprises PD detector and controller, described controller is connected to driver, described PD detector be arranged on light source near.
2. power self check photometry transmitter according to claim 1, it is characterized in that: described PD detector is PIN diode.
3. power self check photometry transmitter according to claim 1 and 2 is characterized in that: also be connected with a No Light Alarm device on the described PD detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398720 CN202696617U (en) | 2012-08-13 | 2012-08-13 | Optical transmitter with self power detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398720 CN202696617U (en) | 2012-08-13 | 2012-08-13 | Optical transmitter with self power detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696617U true CN202696617U (en) | 2013-01-23 |
Family
ID=47552167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220398720 Expired - Fee Related CN202696617U (en) | 2012-08-13 | 2012-08-13 | Optical transmitter with self power detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218998A (en) * | 2013-06-04 | 2014-12-17 | 富士通光器件株式会社 | Light source module and light receiving-sending device |
| CN107332622A (en) * | 2017-05-17 | 2017-11-07 | 西安科锐盛创新科技有限公司 | LED light emitter |
-
2012
- 2012-08-13 CN CN 201220398720 patent/CN202696617U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218998A (en) * | 2013-06-04 | 2014-12-17 | 富士通光器件株式会社 | Light source module and light receiving-sending device |
| CN107332622A (en) * | 2017-05-17 | 2017-11-07 | 西安科锐盛创新科技有限公司 | LED light emitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130813 |