CN1328623C - Controllable laser signal time delay unit - Google Patents
Controllable laser signal time delay unit Download PDFInfo
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- CN1328623C CN1328623C CNB2004100437522A CN200410043752A CN1328623C CN 1328623 C CN1328623 C CN 1328623C CN B2004100437522 A CNB2004100437522 A CN B2004100437522A CN 200410043752 A CN200410043752 A CN 200410043752A CN 1328623 C CN1328623 C CN 1328623C
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- crystal
- laser
- glan prism
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
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Abstract
The present invention relates to a controllable laser signal time delay device. Laser light is inputted into an input end of a first Glan prism (1), the laser light is transmitted, and the laser light is outputted into an input end of an electro-optical crystal (2) from an output end of the first Glan prism (1). The laser light transmitted by the electro-optical crystal (2) is outputted into an input end of a second Glan prism (3) from an output end of the electro-optical crystal (2). The laser light transmitted by the second Glan prism (3) is outputted into an input end of a convex lens (4) from an output end of the second Glan prism (3). The laser light transmitted by the convex lens (4) is outputted into an input end of a light delay crystal (5) from an output end of the convex lens (4). The laser light transmitted by the light delay crystal (5) is outputted from an output end of the light delay crystal (5). A focus focal point (4-1) of the light output end of the convex lens (4) and a center point (5-1) of an axial line of the light delay crystal (5) are coincident. Two signal driving input ends of the electro-optical crystal (2) are respectively connected with two output ends of a driving power supply (6). The present invention can carry out time delay operation for a laser signal in a laser radar and a laser communication system. The present invention has the advantages of simple structure, convenient operation, low cost, high efficiency, high precision, small dimension and high reliability.
Description
Technical field:
What the present invention relates to is delay technique in laser radar or the optical communication system, specifically is a kind of controlled laser signal chronotron.
Background technology:
All will use the signal delay technology in laser radar and laser communication system, present way generally has two kinds: a kind of is to allow signal transmit very long distance in optical fiber come the delay of picked up signal on time domain.This method cost is big, and device is heavy, efficient is low, becomes a bottleneck of restriction optical communication system popularization and application gradually.Another kind method is that light signal is converted to electric signal, then electric signal is carried out delay on the time domain.But the transfer rate and the message capacity of optical communication have so just been limited.
Summary of the invention:
The purpose of this invention is to provide a kind of controlled laser signal chronotron.The present invention can delay time to laser signal in laser radar and the laser communication system.The present invention is made up of first Glan prism 1, electro-optic crystal 2, second Glan prism 3, convex lens 4, light delay crystal 5, a driving power 6; Laser is input to the input end of first Glan prism 1 after first Glan prism 1 transmission and output to the input end of an electro-optic crystal 2 from the output terminal of first Glan prism 1, output to the input end of second Glan prism 3 through the laser of an electro-optic crystal 2 transmission output terminal from an electro-optic crystal 2, laser through 3 transmission of second Glan prism outputs to the input end of convex lens 4 from second Glan prism, 3 output terminals, the laser of planoconvex lens 4 transmission outputs to the input end of light delay crystal 5 from the output terminal of convex lens 4, laser through the transmission of light delay crystal 5 is exported from the output terminal of light delay crystal 5, the central point 5-1 of the focusing focus 4-1 of the light output end of convex lens 4 and light delay crystal 5 axis coincides, and two signals of an electro-optic crystal 2 drive two output terminals that input end connects driving power 6 respectively.The present invention can delay time to laser signal in laser radar and the laser communication system, owing to being full photoreduction process in overall optical signal delay process, through the conversion of photoelectricity one electric light, so the transfer rate of signal can not be restricted; And have simple in structure, easy to operate, low-cost, efficient is high, high precision, size is little, reliability is high advantage.
Description of drawings:
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Embodiment:
Embodiment one: in conjunction with Fig. 1 present embodiment is described, present embodiment is made up of first Glan prism 1, electro-optic crystal 2, second Glan prism 3, convex lens 4, light delay crystal 5, a driving power 6; Laser is input to the input end of first Glan prism 1 after first Glan prism 1 transmission and output to the input end of an electro-optic crystal 2 from the output terminal of first Glan prism 1, output to the input end of second Glan prism 3 through the laser of an electro-optic crystal 2 transmission output terminal from an electro-optic crystal 2, laser through 3 transmission of second Glan prism outputs to the input end of convex lens 4 from second Glan prism, 3 output terminals, the laser of planoconvex lens 4 transmission outputs to the input end of light delay crystal 5 from the output terminal of convex lens 4, laser through the transmission of light delay crystal 5 is exported from the output terminal of light delay crystal 5, the central point 5-1 of the focusing focus 4-1 of the light output end of convex lens 4 and light delay crystal 5 axis coincides, and two signals of an electro-optic crystal 2 drive two output terminals that input end connects driving power 6 respectively.The output drive signal of driving power 6 uses is frequency adjustable Gauss pulse signal in 5Hz～500Hz scope.Principle of work: laser is input in the electro-optic crystal 2 also modulated by first Glan prism 1, is input in the light delay crystal 5 by second Glan prism 3, convex lens 4 then to postpone.And the retardation of light signal is relevant with the light intensity of laser and modulating frequency, and light intensity high modulation frequency more is low more, and the retardation of signal is just big more.So just can be by regulating the time delay that light intensity or modulating frequency are come control signal.
Embodiment two: what the delay crystal 5 in the present embodiment used is the alexandrite crystal crystal; Other composition is identical with embodiment one with annexation.Present embodiment can postpone the laser of 450nm～510nm wave band.
Embodiment three: what the delay crystal 5 in the present embodiment used is ruby crystal; Other composition is identical with embodiment one with annexation.Present embodiment can postpone the laser of 360nm～460nm wave band and 500nm～600nm wave band.
Claims (4)
1, controlled laser signal chronotron is characterized in that it is made up of first Glan prism (1), an electro-optic crystal (2), second Glan prism (3), convex lens (4), light delay crystal (5), driving power (6); Laser is input to the input end of first Glan prism (1) after first Glan prism (1) transmission and output to the input end of an electro-optic crystal (2) from the output terminal of first Glan prism (1), output to the input end of second Glan prism (3) through the laser of an electro-optic crystal (2) transmission output terminal from an electro-optic crystal (2), laser through second Glan prism (3) transmission outputs to the input end of convex lens (4) from second Glan prism (3) output terminal, the laser of planoconvex lens (4) transmission outputs to the input end of light delay crystal (5) from the output terminal of convex lens (4), laser through light delay crystal (5) transmission is exported from the output terminal of light delay crystal (5), the focusing focus (4-1) of the light output end of convex lens (4) coincides with the central point (5-1) of light delay crystal (5) axis, and two signals of an electro-optic crystal (2) drive two output terminals that input end connects driving power (6) respectively.
2, controlled laser signal chronotron according to claim 1, what it is characterized in that light delay crystal (5) use is the alexandrite crystal crystal.
3, controlled laser signal chronotron according to claim 1, what it is characterized in that light delay crystal (5) use is ruby crystal.
4, controlled laser signal chronotron according to claim 1, what it is characterized in that the output drive signal of driving power (6) uses is frequency adjustable Gauss pulse signal in 5Hz～500Hz scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100437522A CN1328623C (en) | 2004-07-28 | 2004-07-28 | Controllable laser signal time delay unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100437522A CN1328623C (en) | 2004-07-28 | 2004-07-28 | Controllable laser signal time delay unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598648A CN1598648A (en) | 2005-03-23 |
| CN1328623C true CN1328623C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100437522A Expired - Fee Related CN1328623C (en) | 2004-07-28 | 2004-07-28 | Controllable laser signal time delay unit |
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| CN (1) | CN1328623C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660339B (en) * | 2015-02-09 | 2017-11-07 | 福建师范大学 | The method and apparatus that a kind of utilization fluorescent effect realizes optical signal delay |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4628473A (en) * | 1984-07-27 | 1986-12-09 | Cooper Lasersonics, Inc. | System for autocorrelating optical radiation signals |
| JP2002072270A (en) * | 2000-09-01 | 2002-03-12 | Japan Science & Technology Corp | Method and device for converting time signal into two- dimensional spatial signal at ultra-high speed |
| JP2002082239A (en) * | 2000-09-11 | 2002-03-22 | Nec Corp | Photonic crystal and optical pulse controller using the crystal |
| JP2003043417A (en) * | 2001-07-31 | 2003-02-13 | Mitsui Chemicals Inc | Variable difference time delay line and primary polarization dispersion correcting device |
| US20030185532A1 (en) * | 2002-03-29 | 2003-10-02 | Kazuhiko Hosomi | Optical functional device and fabrication process for the same |
-
2004
- 2004-07-28 CN CNB2004100437522A patent/CN1328623C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4628473A (en) * | 1984-07-27 | 1986-12-09 | Cooper Lasersonics, Inc. | System for autocorrelating optical radiation signals |
| JP2002072270A (en) * | 2000-09-01 | 2002-03-12 | Japan Science & Technology Corp | Method and device for converting time signal into two- dimensional spatial signal at ultra-high speed |
| JP2002082239A (en) * | 2000-09-11 | 2002-03-22 | Nec Corp | Photonic crystal and optical pulse controller using the crystal |
| JP2003043417A (en) * | 2001-07-31 | 2003-02-13 | Mitsui Chemicals Inc | Variable difference time delay line and primary polarization dispersion correcting device |
| US20030185532A1 (en) * | 2002-03-29 | 2003-10-02 | Kazuhiko Hosomi | Optical functional device and fabrication process for the same |
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| Publication number | Publication date |
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| CN1598648A (en) | 2005-03-23 |
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Granted publication date: 20070725 Termination date: 20120728 |