CN204966963U - Based on semiconductor light amplifier and light pulse production ultra wide band pulser - Google Patents
Based on semiconductor light amplifier and light pulse production ultra wide band pulser Download PDFInfo
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- CN204966963U CN204966963U CN201520738211.5U CN201520738211U CN204966963U CN 204966963 U CN204966963 U CN 204966963U CN 201520738211 U CN201520738211 U CN 201520738211U CN 204966963 U CN204966963 U CN 204966963U
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Abstract
The utility model relates to an in semiconductor light amplifier and light pulse production ultra wide band pulser, include: the laser instrument, position pattern generator, mach ceng deer modulator, optical power divider 1 and 2, optical attenuator, semiconductor light amplifier, the light delay timer, the luminous power combiner, optic fibre, light packet switching ware 1 and 2, photodiode 1 and 2, the electric power combiner, the laser instrument inserts a mach ceng deer modulator respectively with position pattern generator, the output of mach ceng deer modulator connects optical power divider 1, two outputs of optical power divider 1 connect optical attenuator and light delay timer respectively, semiconductor light amplifier connects the luminous power combiner with the output of light delay timer, the luminous power combiner links to each other with optic fibre, two outputs of optical power divider 2 link to each other with light packet switching ware 1 and 2, light packet switching ware 1 and 2 respectively with photodiode 1, 2 link to each other, photodiode 1, 2 output and electric power combiner link to each other.
Description
Technical field
The utility model relates to optical communication technique field, and particularly a kind of based semiconductor image intensifer and light pulse produce ultra-short pulse flushing device.
Background technology
Along with the application of super-broadband tech is more and more extensive, adopting optic network to produce ultra-broadband signal has become new development trend.Multiple optical means has been had to be used for producing ultra-broadband signal at present, achieve the continuous service and high data rate access anywhere or anytime of crossing over heterogeneous networks, and avoid extra electric light or opto-electronic conversion, save system resource, be of value to the formation of all-optical network.Wherein adopt semiconductor optical amplifier to have the features such as high non-linearity, light-operated manipulation, low consumpting power, become optics and produce one of conventional device of ultra-broadband signal.Existing based semiconductor image intensifer produces ultra-broadband signal method, and generally to have structure simple, and fast response time, is easy to the feature realized, but diverse ways all more or less there is some shortcomings part, specific as follows:
1. cost higher, do not meet economic and practical requirement;
2. there is serious frequency chirp and extinction ratio degradation phenomenon;
3. multipath fading is larger.
Utility model content
The purpose of this utility model proposes a kind of economic and practical, can improve serious frequency chirp and extinction ratio degradation phenomenon, and the optical-fiber network that can reduce multipath fading generates adjustable ultra-short pulse flushing device.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, comprise: laser, position pattern generator, MZ Mach-Zehnder, optical power divider 1 and 2, optical attenuator, semiconductor optical amplifier, optical time delay unit, luminous power mixer, optical fiber, optical packet exchanger 1 and 2, photodiode 1 and 2, electrical power mixer, laser and position pattern generator access MZ Mach-Zehnder respectively, MZ Mach-Zehnder exports and connects optical power divider 1, two outputs of optical power divider 1 connect optical attenuator and optical time delay unit respectively, semiconductor optical amplifier and optical time delay unit export and connect luminous power mixer, luminous power mixer is connected with optical fiber, two outputs of optical power divider 2 are connected with 2 with optical packet exchanger 1, optical packet exchanger 1 and 2 respectively with photodiode 1, 2 are connected, photodiode 1, the output of 2 is connected with electrical power mixer.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, adopt single-mode laser to produce a continuous light signal, are carried out the modulation of Gaussian pulse by MZ Mach-Zehnder, generate light Gaussian pulse.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, optical attenuator is adopted to regulate the input power of semiconductor optical amplifier, utilize the own gain saturation recovery characteristic of semiconductor optical amplifier to produce ultra broadband Monocycle pulse, the delay inequality that wherein optical time delay unit produces is 1/4 light Gaussian pulse signal period.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, and pulse can realize broadening and the compression of pulse duration by the optical fiber of appropriate length, realize the ultra-wideband pulse more meeting FCC definition requirement as required.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, and optical packet exchanger 1 and optical packet exchanger 2 belong to light pulse, comprise the adjustment of light pulse amplitude and impulse time delay adjustment.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, and the adjustment of light pulse amplitude is the control by optical attenuator control impuls amplitude, and impulse time delay adjustment carries out time delay adjustment by optical time delay unit.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, have following beneficial effect:
(1) adopt single-mode laser to decrease the quantity of light source, thus reduce cost;
(2) semiconductor optical amplifier and optical time delay unit is adopted to produce ultra-broadband signal, output extinction ratio can be improved, the ultra-wideband pulse exported, only containing a pulse, can avoid upper and lower pulse to be formed by stacking by two wavelength, solves on optical fiber, to transmit upper and lower pulse can introduce time difference problem;
(3) realize the adjustment of light pulse signal width by the size of the abbe number of adjustment optical fiber, produce the ultra-broadband signal of random waveform;
(4) adopt light pulse, the reduction of multipath fading can be realized, and can produce meet international standard definition, the more ultra-broadband signal of high spectrum utilization;
The aspect that the utility model is additional and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device;
Embodiment
As shown in Figure 1, a kind of based semiconductor image intensifer and light pulse produce ultra-short pulse flushing device, comprise: laser (1), position pattern generator (2), MZ Mach-Zehnder (3), optical power divider 1 (4), optical power divider 2 (9), optical attenuator (5), semiconductor optical amplifier (6), optical time delay unit (7), luminous power mixer (8), optical fiber (10), optical packet exchanger 1 (11), optical packet exchanger 2 (12), photodiode 1 (13), photodiode 2 (14), electrical power mixer (15).Wherein, laser (1) and position pattern generator (2) access MZ Mach-Zehnder (3) respectively, MZ Mach-Zehnder (3) exports and connects optical power divider 1 (4), two outputs of optical power divider (4) connect optical attenuator (5) and optical time delay unit (7) respectively, semiconductor optical amplifier (6) and optical time delay unit (7) export and connect luminous power mixer (8), luminous power mixer (8) is connected with optical fiber (10), two outputs of optical power divider 2 (9) are connected with optical packet exchanger 2 (12) with optical packet exchanger 1 (11) respectively, optical packet exchanger 1 (11) and optical packet exchanger 2 (12) respectively with photodiode 1 (13), photodiode 2 (14) is connected, photodiode 1 (13), the output of photodiode 2 (14) is connected with electrical power mixer (15).
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, single-mode laser (1), produce the single longitudinal mode light carrier of specified wavelength; Position MZ Mach-Zehnder (3), for carrying out intensity modulated to the single longitudinal mode light carrier of specified wavelength; Position pattern generator (2), produces a 10Gb/s electricity rz signal, realizes double-sideband modulation produce light Gaussian pulse for driving MZ Mach-Zehnder (3); Optical power divider 1 (4), for the two paths of signals of constant power be divided into by the light Gaussian pulse signal of generation; Optical attenuator (5), for regulating the input power of semiconductor optical amplifier; Semiconductor optical amplifier (6), produces ultra broadband Monocycle pulse signal for utilizing own gain saturation recovery characteristic; Optical time delay unit (7) is 1/4 light Gaussian pulse signal period for generation of delay inequality; Luminous power mixer (8), produces ultra broadband Doublet pulse signal for the light Gaussian pulse of above-mentioned ultra broadband Monocycle pulse and time delay being carried out superposition; Optical fiber (10), for adjusting its abbe number, thus realizes the width adjustment of the ultra broadband Doublet pulse signal produced; Optical power divider 2 (9), for being divided into the identical signal of two-way of constant power by the ultra-wideband impulse signal adjusted; Optical packet exchanger 1 (11) and optical packet exchanger 2 (12), for being controlled amplitude and the position of ultra-broadband signal by optical attenuator and optical time delay unit, thus control waveform and the frequency spectrum of ultra broadband; Photodiode 1 (13) and photodiode 2 (14) are the signal of telecommunication for transmitting photo-signal; Electrical power mixer (15), for merging into a road pulse signal by the above-mentioned two-way ultra wide band electrically signal adjusted.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, , relative to existing ultra-wideband pulse generation device main advantage be: the 10Gb/s electricity rz signal adopting single-mode laser (1) and position pattern generator to produce inputs in MZ Mach-Zehnder (3), create light Gaussian pulse, utilize optical power divider 1 (4) that light Gaussian pulse is divided into two paths of signals, leading up to optical attenuator (5) and semiconductor optical amplifier (6) produces ultra broadband Monocycle pulse signal, separately lead up to optical time delay unit (7), produce the time delay light Gaussian pulse signal that delay inequality is 1/4 light Gaussian pulse signal period, then luminous power mixer (8) is utilized, the light Gaussian pulse of above-mentioned ultra broadband Monocycle pulse and time delay is carried out superposition generation ultra broadband Doublet pulse signal.Embody two aspect advantages in this process, namely number of lasers reduces, and cost reduces; Semiconductor optical amplifier and optical time delay unit is adopted to produce ultra-broadband signal, can improve and export washed extinction ratio, the ultra-wideband pulse exported, only containing a pulse, can avoid upper and lower pulse to be formed by stacking by two wavelength, solves on optical fiber, to transmit upper and lower pulse can introduce time difference problem.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, relative to existing ultra-wideband pulse shape and frequency spectrum adjusting device main advantage be: the adjustment ultra broadband Doublet pulse signal of above-mentioned generation being carried out width through optical fiber (10), then send into optical power divider 2 (9) and ultra-wideband pulse is divided into two paths of signals, this two paths of signals is sent in optical packet exchanger 1 (11) and optical packet exchanger 2 (12) respectively, amplitude and the position of ultra-broadband signal is controlled by optical attenuator and optical time delay unit, thus control waveform and the frequency spectrum of ultra broadband, finally by the two-way ultra-wideband-light pulse signal adjusted respectively through photodiode 1 (13) and photodiode 2 (14), realize opto-electronic conversion, finally by electrical power mixer (15), the above-mentioned two-way ultra wide band electrically signal adjusted is merged into a road pulse signal.In this ultra-wideband pulse adjustment process, the main advantage of embodiment is: by adjusting the size of the abbe number of optical fiber thus realizing the adjustment of light pulse signal width, produce the ultra-broadband signal of random waveform; Adopt light pulse, the reduction of multipath fading can be realized, and can produce meet international standard definition, the more ultra-broadband signal of high spectrum utilization.
A kind of based semiconductor image intensifer of the utility model and light pulse produce ultra-short pulse flushing device, it is a kind of economic serviceability, can improve serious frequency chirp and extinction ratio degradation phenomenon, and the optical-fiber network that can reduce multipath fading generates adjustable ultra-short pulse flushing device.
Claims (8)
1. a based semiconductor image intensifer and light pulse produce ultra-short pulse flushing device, it is characterized in that, comprise: laser (1), position pattern generator (2), MZ Mach-Zehnder (3), optical power divider 1 (4), optical power divider 2 (9), optical attenuator (5), semiconductor optical amplifier (6), optical time delay unit (7), luminous power mixer (8), optical fiber (10), optical packet exchanger 1 (11), optical packet exchanger 2 (12), photodiode 1 (13), photodiode 2 (14), electrical power mixer (15),
Described laser (1) and position pattern generator (2) access MZ Mach-Zehnder (3) respectively; Described MZ Mach-Zehnder (3) exports and connects optical power divider 1 (4); Two outputs of described optical power divider (4) connect optical attenuator (5) and optical time delay unit (7) respectively; Described semiconductor optical amplifier (6) and optical time delay unit (7) export and connect luminous power mixer (8); Described luminous power mixer (8) is connected with optical fiber (10); Two outputs of described optical power divider 2 (9) are connected with optical packet exchanger 2 (12) with optical packet exchanger 1 (11) respectively; Described optical packet exchanger 1 (11) is connected with photodiode 1 (13), photodiode 2 (14) respectively with optical packet exchanger 2 (12); The output of described photodiode 1 (13), photodiode 2 (14) is connected with electrical power mixer (15).
2. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described position pattern generator (2) produces light Gaussian pulse signal by MZ Mach-Zehnder (3).
3. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described MZ Mach-Zehnder (3) modulation double-sideband signal, modulation voltage is set to the half of switching voltage.
4. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described optical attenuator (5), for regulating the input power of semiconductor optical amplifier (6), utilizes the own gain saturation recovery characteristic of semiconductor optical amplifier (6) to produce ultra broadband Monocycle pulse.
5. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, the delay inequality that described optical time delay unit (7) produces is 1/4 light Gaussian pulse signal period.
6. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described optical fiber (10) has high abbe number, for the compression of pulse, realizes the ultra-wideband pulse more meeting FCC definition requirement.
7. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described optical packet exchanger 1 (11) and optical packet exchanger 2 (12) belong to light pulse, comprise the adjustment of light pulse amplitude and impulse time delay adjustment.
8. a kind of based semiconductor image intensifer according to claim 1 and light pulse produce ultra-short pulse flushing device, it is characterized in that, described light pulse amplitude adjustment is the control by optical attenuator control impuls amplitude, and impulse time delay adjustment carries out time delay adjustment by optical time delay unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270765A (en) * | 2018-11-08 | 2019-01-25 | 电子科技大学 | A kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength and device |
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- 2015-09-22 CN CN201520738211.5U patent/CN204966963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270765A (en) * | 2018-11-08 | 2019-01-25 | 电子科技大学 | A kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength and device |
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