CN104852267A - Device and method for external modulation of fiber interface light source - Google Patents
Device and method for external modulation of fiber interface light source Download PDFInfo
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- CN104852267A CN104852267A CN201510179364.5A CN201510179364A CN104852267A CN 104852267 A CN104852267 A CN 104852267A CN 201510179364 A CN201510179364 A CN 201510179364A CN 104852267 A CN104852267 A CN 104852267A
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Abstract
The invention discloses a device and a method for external modulation of a fiber interface light source, and belongs to the technical field of tests. The device comprises a master control circuit, a power circuit, a drive circuit, a modulation circuit, an interface circuit, a key circuit, and a display circuit. The power circuit, the drive circuit, the modulation circuit, the interface circuit, the key circuit, and the display circuit are connected with the master control circuit through a circuit. The drive circuit and the modulation circuit are connected through a circuit. The device and the method for external modulation of a fiber interface light source do not need any adjustment of operating states of existing various fiber interface laser light sources. Through the external light source modulation device, pulse modulation on a continuous light source is realized, so as to reduce cost investment, reduce system volume, simplify operation process. The device and the method have very good versatility.
Description
Technical field
The invention belongs to technical field of measurement and test, be specifically related to a kind of external modulating device and method of optical fiber interface light source.
Background technology
Along with the develop rapidly of modern science and technology, laser technology based on laser obtains and develops rapidly, laser technology has now been widely used in the every field of the national economy such as industry, military affairs, culture and education and scientific research, and achieve good economic benefit and social benefit, the development of laser technology to national economy and society plays more and more important effect.In recent years, along with the develop rapidly of the modern science and technology such as micro-electronic mechanical skill, precision optical machinery processing and manufacturing technology, make the use of laser more and more general, especially be widely used in accurate measurement, but, due to the restriction of the aspects such as technology, manufacture technics, cost, at present can in some very wide wave bands output pulse width, the continuously adjustable light-pulse generator of frequency very rare, and spectral coverage narrow range, expensive, bulky, cause poor practicability.
The light source that present major part is ripe is continuous light source and internal modulation light source, even additional Tidal stress device, also be difficult to accomplish that continuously adjustable pulsed light exports, and narrow pulse peak power after modulation is also unknown often, ripe instrument is not also had to modulate existing continuous light source at present through investigating, output pulse width and the continuously adjustable light-pulse generator of frequency.
At present, do not find that there is the instrument of similar functions, and can inquire about be applied to optical communication field pulse modulation light, the mode mostly being embedded pulse drive system or applying pulse triggering exports to produce corresponding pulsed light, for existing continuous light source, although a part is with inside and outside input triggered mode of operation, when carrying out pulsed light and exporting modulation, need to arrange internal trigger signal or configure external trigger signal source, following shortcoming can be caused: (1) pulse duration and pulse frequency receive the restriction of trigger signal source, cause the light-pulse generator not reaching required setting pulsewidth and frequency, (2) due to the change of activated modulation frequency, the light-pulse generator after modulating can be caused to export after long-time use unstable, also greatly can reduce serviceability and the life-span of light source simultaneously, (3) due to the change of outer input trigger condition, the pulsed light peak optical powers of the high-frequency after ovennodulation, narrow spaces can produce probabilistic change, affects rear end and uses, (4) after adding external trigger condition, need the parameter that light source and external trigger signal source are set simultaneously, cause Dynamic System complicated.
Summary of the invention
For the above-mentioned technical problem existed in prior art, the present invention proposes a kind of external modulating device and method of optical fiber interface light source, reasonable in design, overcome the deficiencies in the prior art, easy to maintenance, there is good effect.
To achieve these goals, the present invention adopts following technical scheme:
A kind of external modulating device of optical fiber interface light source, comprise governor circuit, power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit, described power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit all pass through connection with governor circuit, and described drive circuit and modulation circuit pass through connection.
Preferably, described modulation circuit comprises the first optical fiber collimator, chopper, motor and the second optical fiber collimator, and described first optical fiber collimator, chopper are connected successively with the second optical fiber collimator, and described chopper is connected by axle with motor.
Preferably, described governor circuit, drive circuit, motor and chopper composition closed-loop path.
In addition, the present invention also mentions a kind of external modulator approach of optical fiber interface light source, and the method adopts the external modulating device of above-mentioned a kind of optical fiber interface light source, comprises the following steps:
Step 1: utilize integrated anti-seismic structure designing technique, installs fixing described external modulating device;
Step 2: described external modulating device is powered up start, carries out functional status self-inspection;
Step 3: the duty cycle parameters that the motion mode of motor, output signal pulses width and signal are set by key circuit;
Step 4: by above-mentioned set parameters, be sent to governor circuit by bus interface;
Step 5: by the logic control of governor circuit, instructions is sent to drive circuit, key circuit, interface circuit, display circuit and electric power management circuit, drive circuit, key circuit, interface circuit, display circuit and electric power management circuit are started working;
Step 6: drive circuit drive motors drives chopper to rotate;
Step 7: external continuous light source arrives chopper through external modulating device input interface and the first optical fiber collimator;
Step 8: external continuous light source is modulated into intermittent light source by chopper;
Step 9: intermittent light source exports from external modulating device output interface through the second optical fiber collimator;
Step 10: the feedback interface utilizing interface circuit, the output state of real-time sensed light signal;
Step 11: until the output light source at external modulating device optical fiber output interface place is require the pulse modulated light source after arranging according to input parameter.
The Advantageous Effects that the present invention brings:
The present invention proposes a kind of external modulating device and method of optical fiber interface light source, compared with prior art, a kind of external modulating device of optical fiber interface light source and method, do not need to make any adjustments the operating state of existing various optical fiber interface laser light source, by external modulation of source device, realize pulse modulation to continuous light source, thus reduced cost drops into, reduces system bulk, simplify the operation flow process, has very strong versatility.
Accompanying drawing explanation
Fig. 1 is the general structure block diagram of the external modulating device of a kind of optical fiber interface of the present invention light source.
Fig. 2 is the FB(flow block) of the external modulator approach of a kind of optical fiber interface of the present invention light source.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Embodiment 1:
As shown in Figure 1, a kind of external modulating device of optical fiber interface light source, comprise governor circuit, power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit, described power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit all pass through connection with governor circuit, and described drive circuit and modulation circuit pass through connection.Described modulation circuit comprises the first optical fiber collimator, chopper, motor and the second optical fiber collimator, and described first optical fiber collimator, chopper are connected successively with the second optical fiber collimator, and described chopper is connected by axle with motor.Described governor circuit, drive circuit, motor and chopper composition closed-loop path.
Just can be realized a kind of external modulating device of optical fiber interface light source by the present invention, this device can realize the pulse modulation to continuous light source, thus reduced cost drop into, reduce system bulk, simplify the operation flow process, has very strong versatility.
Embodiment 2:
On the basis of above-described embodiment, the invention provides a kind of external modulator approach (as shown in Figure 2) of optical fiber interface light source, realize modulating the programmable pulse of continuous light source, wherein, comprise the following steps:
Step 1: utilize integrated anti-seismic structure designing technique, installs fixing described external modulating device;
Step 2: described external modulating device is powered up start, carries out functional status self-inspection;
Step 3: the duty cycle parameters that the motion mode of motor, output signal pulses width and signal are set by key circuit;
Step 4: by above-mentioned set parameters, be sent to governor circuit by bus interface;
Step 5: by the logic control of governor circuit, instructions is sent to drive circuit, key circuit, interface circuit, display circuit and electric power management circuit, drive circuit, key circuit, interface circuit, display circuit and electric power management circuit are started working;
Step 6: drive circuit drive motors drives chopper to rotate;
Step 7: external continuous light source arrives chopper through external modulating device input interface and the first optical fiber collimator;
Step 8: external continuous light source is modulated into intermittent light source by chopper;
Step 9: intermittent light source exports from external modulating device output interface through the second optical fiber collimator;
Step 10: the feedback interface utilizing interface circuit, the output state of real-time sensed light signal;
Step 11: until the output light source at external modulating device optical fiber output interface place is require the pulse modulated light source after arranging according to input parameter.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (4)
1. the external modulating device of an optical fiber interface light source, it is characterized in that: comprise governor circuit, power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit, described power circuit, drive circuit, modulation circuit, interface circuit, key circuit and display circuit all pass through connection with governor circuit, and described drive circuit and modulation circuit pass through connection.
2. the external modulating device of a kind of optical fiber interface light source according to claim 1, it is characterized in that: described modulation circuit comprises the first optical fiber collimator, chopper, motor and the second optical fiber collimator, described first optical fiber collimator, chopper are connected successively with the second optical fiber collimator, and described chopper is connected by axle with motor.
3. the external modulating device of a kind of optical fiber interface light source according to claim 2, is characterized in that: described governor circuit, drive circuit, motor and chopper composition closed-loop path.
4. an external modulator approach for optical fiber interface light source, is characterized in that: the external modulating device adopting a kind of optical fiber interface light source as claimed in claim 1, comprises the following steps:
Step 1: utilize integrated anti-seismic structure designing technique, installs fixing described external modulating device;
Step 2: described external modulating device is powered up start, carries out functional status self-inspection;
Step 3: the duty cycle parameters that the motion mode of motor, output signal pulses width and signal are set by key circuit;
Step 4: by above-mentioned set parameters, be sent to governor circuit by bus interface;
Step 5: by the logic control of governor circuit, instructions is sent to drive circuit, key circuit, interface circuit, display circuit and electric power management circuit, drive circuit, key circuit, interface circuit, display circuit and electric power management circuit are started working;
Step 6: drive circuit drive motors drives chopper to rotate;
Step 7: external continuous light source arrives chopper through external modulating device input interface and the first optical fiber collimator;
Step 8: external continuous light source is modulated into intermittent light source by chopper;
Step 9: intermittent light source exports from external modulating device output interface through the second optical fiber collimator;
Step 10: the feedback interface utilizing interface circuit, the output state of real-time sensed light signal;
Step 11: until the output light source at external modulating device optical fiber output interface place is require the pulse modulated light source after arranging according to input parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179364.5A CN104852267A (en) | 2015-04-16 | 2015-04-16 | Device and method for external modulation of fiber interface light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510179364.5A CN104852267A (en) | 2015-04-16 | 2015-04-16 | Device and method for external modulation of fiber interface light source |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210604U (en) * | 1986-12-23 | 1987-11-07 | 苏州大学 | Mechanical laser strobovibration controlling meter |
| CN101213438A (en) * | 2005-07-06 | 2008-07-02 | 皇家飞利浦电子股份有限公司 | Photo-acoustic spectrometer apparatus |
| US20090128047A1 (en) * | 2007-11-19 | 2009-05-21 | Samsung Electronics Co., Ltd. | Backlight assembly, display apparatus having the same and control method thereof |
| CN101986485A (en) * | 2010-08-20 | 2011-03-16 | 中国科学院上海光学精密机械研究所 | Device for keeping polarization direction and energy stability of low-repetition-frequency short pulse optical signal |
| CN202230246U (en) * | 2011-10-13 | 2012-05-23 | 上海理工大学 | High-stability optical chopper |
| CN204558877U (en) * | 2015-04-16 | 2015-08-12 | 中国电子科技集团公司第四十一研究所 | A kind of external modulating device of optical fiber interface light source |
-
2015
- 2015-04-16 CN CN201510179364.5A patent/CN104852267A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210604U (en) * | 1986-12-23 | 1987-11-07 | 苏州大学 | Mechanical laser strobovibration controlling meter |
| CN101213438A (en) * | 2005-07-06 | 2008-07-02 | 皇家飞利浦电子股份有限公司 | Photo-acoustic spectrometer apparatus |
| US20090128047A1 (en) * | 2007-11-19 | 2009-05-21 | Samsung Electronics Co., Ltd. | Backlight assembly, display apparatus having the same and control method thereof |
| CN101986485A (en) * | 2010-08-20 | 2011-03-16 | 中国科学院上海光学精密机械研究所 | Device for keeping polarization direction and energy stability of low-repetition-frequency short pulse optical signal |
| CN202230246U (en) * | 2011-10-13 | 2012-05-23 | 上海理工大学 | High-stability optical chopper |
| CN204558877U (en) * | 2015-04-16 | 2015-08-12 | 中国电子科技集团公司第四十一研究所 | A kind of external modulating device of optical fiber interface light source |
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Application publication date: 20150819 |