CN109029413A - A kind of double work frequency optical fibre gyro - Google Patents
A kind of double work frequency optical fibre gyro Download PDFInfo
- Publication number
- CN109029413A CN109029413A CN201811029731.3A CN201811029731A CN109029413A CN 109029413 A CN109029413 A CN 109029413A CN 201811029731 A CN201811029731 A CN 201811029731A CN 109029413 A CN109029413 A CN 109029413A
- Authority
- CN
- China
- Prior art keywords
- light
- frequency
- fiber
- output
- fiber grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/721—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/725—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers using nxn optical couplers, e.g. 3x3 couplers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
The invention discloses a kind of double work frequency optical fibre gyros, including light source, Polarization Controller, fiber optic splitter, the first fiber grating, the first wavelength division multiplexer, fiber coupler, fiber optic loop, the second wavelength division multiplexer, the second fiber grating, spectrometer, signal processing and output system；First fiber grating, the second fiber grating are narrowband transmission-type fiber grating；The centre of homology frequency of first fiber grating and the centre of homology frequency of the second fiber grating are different；The light source is wideband light source, and its spectral region includes centre of homology frequency, the centre of homology frequency of the second fiber grating of the first fiber grating；By the difference of the resonance frequency of the two-beam wave transmitted in opposite directions, while obtaining the size and Orientation of this optical fibre gyro rotation speed；Effect and benefit of the invention are as follows: structure is simple, optical noise is low, avoids the interference between the two-beam wave transmitted in opposite directions, and can differentiate rotation speed direction not carrying out phase-modulation to optical signal.
Description
Technical field
The present invention relates to the technical fields of optical fibre gyro, and in particular to a kind of double work frequency optical fibre gyro.
Background technique
1976, the V.Vali and R.W.Shorthill of Utah university of the U.S. successfully had developed first optical fibre gyro, light
As soon as fine gyro comes out, the advantages that fast, the service life is long, low in energy consumption is started with it, causes worldwide extensive concern, and obtain
It develops by leaps and bounds.Optical fibre gyro is based on Sagnac effect, i.e. light wave is in transmission process, due to the rotation in relative inertness space
And generate additional phase.Currently, traditional resonance type optical fiber gyro uses a fiber annular resonant cavity, when gyro rotates
When, resonance frequency of the light wave in fiber annular resonant cavity can change with rotation speed, in fiber annular resonant cavity
The two-beam wave transmitted in opposite directions, the transmission direction of the two is on the contrary, the wherein transmission direction of a branch of light wave and rotation speed direction phase
Together, the transmission direction of another Shu Guangbo is different from rotation speed direction, therefore, the resonance frequency for the light wave that this two beam transmits in opposite directions
Rate is different, and the difference between the two resonance frequency is directly proportional to rotation speed size, so passing through detection resonance type optical fiber gyro
In resonant frequency difference value between the light wave that transmits in opposite directions of two beams, can measure rotation speed size.
But for traditional resonance type optical fiber gyro, light source is narrow-band light source, and coherence is strong, and its light source output
After need to be split, to introduce the light wave that transmits in opposite directions of two beams simultaneously, since two-beam wave transmission path is identical,
It is easily interfered between two-beam wave, to introduce a large amount of optical noises；On the other hand, the two-beam wave transmitted in opposite directions in gyro
Frequency it is identical, and resonance occurs in same fiber annular resonant cavity, causes the resonance spectrum of two light waves identical, Wu Faqu
Point, accordingly, it is difficult to differentiate rotation speed direction, need to be added the signal processing system of the optical devices such as phase-modulator and complexity
System, could differentiate rotation speed direction, the mode in this resolution rotation speed direction increase the complexity of gyro system structure,
Corresponding noise is introduced, and further reduced the precision of gyro.
Summary of the invention
Based on the above shortcomings, the present invention provides a kind of double work frequency optical fibre gyro, wherein two beams transmitted in opposite directions
The frequency of light wave is different, avoids the interference between the two-beam wave transmitted in opposite directions, by the resonance frequency of the two-beam wave transmitted in opposite directions
The difference of rate, while the size and Orientation of rotation speed is obtained, overcoming current resonance type optical fiber gyro, structure is complicated, optical noise
Height is difficult to the problem of differentiating rotation speed direction.
The object of the present invention is achieved like this: a kind of double work frequency optical fibre gyro, including light source, Polarization Controller,
Fiber optic splitter, the first fiber grating, the first wavelength division multiplexer, fiber coupler, fiber optic loop, the second wavelength division multiplexer, second
Fiber grating, spectrometer, signal processing and output system, the light input end of the light output end connection Polarization Controller of light source, partially
Shake controller light output end connection fiber optic splitter light input end, spectrometer electrical signal connection signal processing and
The electric signal input end of output system,
First light output end of the fiber optic splitter connects the light input end of the first fiber grating, the first fiber grating
Light output end connect the light input end of the first wavelength division multiplexer, the light input/output port of the first wavelength division multiplexer connects optical fiber coupling
First light input/output port of clutch, the first light input end of the light output end connection spectrometer of the first wavelength division multiplexer, optical fiber
First light input/output port of the second light input/output port connection fiber optic loop of coupler, the third light input of fiber coupler are defeated
Second light input/output port of outlet connection fiber optic loop；The fiber coupler and fiber optic loop constitute fiber annular resonant cavity,
There are the light waves that two transmit in opposite directions in the fiber annular resonant cavity；
Second light output end of the fiber optic splitter connects the light input end of the second fiber grating, the second fiber grating
Light output end connect the light input end of the second wavelength division multiplexer, the light input/output port of the second wavelength division multiplexer connects optical fiber coupling
4th light input/output port of clutch, the second light input end of the light output end connection spectrometer of the second wavelength division multiplexer；
The centre of homology frequency of first fiber grating and the centre of homology frequency of the second fiber grating are different；
First fiber grating and the second fiber grating is narrowband transmission-type fiber grating；
The light source is wideband light source, and its spectral region includes the centre of homology frequency of the first fiber grating, second
The centre of homology frequency of fiber grating；
The centre of homology frequency of first fiber grating, the working frequency of the light input end of the first wavelength division multiplexer,
The working frequency of the light output end of second wavelength division multiplexer, three's frequency are identical；
The centre of homology frequency of second fiber grating, the working frequency of the light input end of the second wavelength division multiplexer,
The working frequency of the light output end of first wavelength division multiplexer, three's frequency are identical；
The first light output end and the second light output end of the fiber optic splitter export the two-beam transmitted in opposite directions respectively
Wave, spectrometer by the resonance spectrum of the two-beam wave received carry out processing be changed into electric signal after, by signal processing and output be
System is processed into the difference of the resonance frequency of two-beam wave, then output signal, the rotation speed size comprising this optical fibre gyro and
Direction.
The present invention also has following technical characteristic:
1, respectively by transmitting in opposite directions of exporting of the first light output end of the fiber optic splitter and the second light output end
The frequency of two-beam wave is different；Avoid the interference between the two-beam wave transmitted in opposite directions.
2, the signal processing and output system include bandwidth-limited circuit, amplifying circuit and extraction output circuit；Light
The electric signal input end of the electrical signal connection bandwidth-limited circuit of spectrometer, the electrical signal of bandwidth-limited circuit connect
The electric signal input end of amplifying circuit is connect, the electric signal input of output circuit is extracted in the electrical signal connection of amplifying circuit
The electrical signal output gyro output signals of output circuit are extracted at end.
The present invention has the advantages that and advantage: the configuration of the present invention is simple, the frequency of the two-beam wave transmitted in opposite directions
Difference avoids the interference between two-beam wave, and it is low to reduce optical noise, and the present invention does not include phase modulator, does not have to pair
Optical signal, which carries out phase-modulation, can differentiate rotation speed direction.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention,
Fig. 2 is signal processing and the electrical block diagram of output system in Fig. 1.
Specific embodiment
Below according to Figure of description citing, the present invention will be further described:
Embodiment 1
As shown in Figs. 1-2, a kind of double work frequency optical fibre gyro, including light source 1, Polarization Controller 2, fiber optic splitter 3,
First fiber grating 4, the first wavelength division multiplexer 5, fiber coupler 6, fiber optic loop 7, the second wavelength division multiplexer 8, the second optical fiber light
Grid 9, spectrometer 10, signal processing and output system 11, the light input end of the light output end connection Polarization Controller 2 of light source 1, partially
Shake controller 2 light output end connection fiber optic splitter 3 light input end, at the electrical signal connection signal of spectrometer 10
The electrical signal output gyro output letter of the electric signal input end of reason and output system 11, signal processing and output system 11
Number；
First light output end of the fiber optic splitter 3 connects the light input end of the first fiber grating 4, the first optical fiber light
The light output end of grid 4 connects the light input end of the first wavelength division multiplexer 5, the light input/output port connection of the first wavelength division multiplexer 5
First light of the first light input/output port of fiber coupler 6, the light output end connection spectrometer 10 of the first wavelength division multiplexer 5 is defeated
Enter end, the second light input/output port of fiber coupler 6 connects the first light input/output port of fiber optic loop 7, fiber coupler 6
Second light input/output port of third light input/output port connection fiber optic loop 7；The fiber coupler 6 and fiber optic loop 7 are constituted
Fiber annular resonant cavity, there are the light waves that two transmit in opposite directions in the fiber annular resonant cavity, as shown in fig. 1, two light waves
Transmission direction is respectively clockwise and counterclockwise；
Second light output end of the fiber optic splitter 3 connects the light input end of the second fiber grating 9, the second optical fiber light
The light output end of grid 9 connects the light input end of the second wavelength division multiplexer 8, the light input/output port connection of the second wavelength division multiplexer 8
Second light of the 4th light input/output port of fiber coupler 6, the light output end connection spectrometer 10 of the second wavelength division multiplexer 8 is defeated
Enter end；
The centre of homology frequency of first fiber grating 4 is different from the centre of homology frequency of the second fiber grating 9；
First fiber grating 4 and the second fiber grating 9 is narrowband transmission-type fiber grating；
The light source 1 is wideband light source, and its spectral region includes the centre of homology frequency of the first fiber grating 4, the
The centre of homology frequency of two fiber gratings 9；
The work frequency of the centre of homology frequency of first fiber grating 4, the light input end of the first wavelength division multiplexer 5
Rate, the second wavelength division multiplexer 8 light output end working frequency, three's frequency is identical；
In the present embodiment, exported respectively by the first light output end of the fiber optic splitter 3 and the second light output end
The frequency of the two-beam wave transmitted in opposite directions is different, avoids the interference between the two-beam wave transmitted in opposite directions；
In the present embodiment, the first light output end and the second light output end of the fiber optic splitter 3 export in opposite directions respectively
The two-beam wave of transmission, spectrometer 10 by the resonance spectrum of the two-beam wave received carry out processing be changed into electric signal after, by believing
Number processing and output system 11 are processed into the difference of the resonance frequency of two-beam wave, and then output signal includes this optical fibre gyro
Rotation speed size and direction.
The signal processing and output system 11 includes bandwidth-limited circuit 11-1, amplifying circuit 11-2 and extraction output
Circuit 11-3；The electric signal input end of the electrical signal connection bandwidth-limited circuit 11-1 of spectrometer 10, bandpass filtering electricity
The electric signal input end of the electrical signal connection amplifying circuit 11-2 of road 11-1, the electrical signal of amplifying circuit 11-2
The electric signal input end of output circuit 11-3 is extracted in connection, extracts the electrical signal output gyro output of output circuit 11-3
Signal.
The working principle of the present embodiment: the fiber coupler 6, fiber optic loop 7 constitute fiber annular resonant cavity, fiber optic loop
There are the light waves that two transmit in opposite directions in shape resonant cavity, and as shown in fig. 1, two light wave transmissions directions are respectively clockwise and inverse
Clockwise；Light source 1 is wideband light source, and the output light of light source 1 enters Polarization Controller 2, and Polarization Controller 2 selects the polarization of light
The output light of state, Polarization Controller 2 is divided into two bundles light wave after fiber optic splitter 3；
The output light of Polarization Controller 2 is divided into two bundles light wave after fiber optic splitter 3, and the first beam light wave enters the first optical fiber
Grating 4, due to the first spectral region that fiber grating 4 is narrowband transmission-type fiber grating, light source 1 is wideband light source and light source 1
Centre of homology frequency comprising the first fiber grating 4 such as indicates the centre of homology frequency of the first fiber grating 4 with v1, in this way,
First fiber grating, 4 output center frequency is the narrowband light wave of v1, due to the centre of homology frequency and first of the first fiber grating 4
The working frequency of the light input end of wavelength division multiplexer 5 is identical, in this way, the centre frequency of the first fiber grating 4 output is the narrow of v1
Band light wave enters fiber annular resonant cavity through the first wavelength division multiplexer 5, counterclockwise transmission and occurs in fiber annular resonant cavity
Resonance, in fiber annular resonant cavity after resonance, resonance spectrum is exported the narrowband light wave that centre frequency is v1 by fiber coupler 6
Into the second wavelength division multiplexer 8, due to the centre of homology frequency of the first fiber grating 4 and the light output of the second wavelength division multiplexer 8
The working frequency at end is identical, in this way, the resonance spectrum that centre frequency is the narrowband light wave of v1 is exported by the second wavelength division multiplexer 8 and entered
Spectrometer 10；
The output light of Polarization Controller 2 is divided into two bundles light wave after fiber optic splitter 3, and the second beam light wave enters the second optical fiber
Grating 9, due to the second spectral region that fiber grating 9 is narrowband transmission-type fiber grating, light source 1 is wideband light source and light source 1
Centre of homology frequency comprising the second fiber grating 9 such as indicates the centre of homology frequency of the second fiber grating 9 with v2, in this way,
Second fiber grating, 9 output center frequency is the narrowband light wave of v2, due to the centre of homology frequency and second of the second fiber grating 9
The working frequency of the light input end of wavelength division multiplexer 8 is identical, in this way, the centre frequency of the second fiber grating 9 output is the narrow of v2
Band light wave enters fiber annular resonant cavity through the second wavelength division multiplexer 8, clockwise transmission and occurs in fiber annular resonant cavity
Resonance, in fiber annular resonant cavity after resonance, resonance spectrum is exported the narrowband light wave that centre frequency is v2 by fiber coupler 6
Into the first wavelength division multiplexer 5, due to the centre of homology frequency of the second fiber grating 9 and the light output of the first wavelength division multiplexer 5
The working frequency at end is identical, in this way, the resonance spectrum that centre frequency is the narrowband light wave of v2 is exported by the first wavelength division multiplexer 5 and entered
Spectrometer 10；
Counterclockwise transmission and resonance occurs for the narrowband light wave that centre frequency is v1 in fiber annular resonant cavity, resonance
Frequency changes with rotation speed, and when rotation speed direction is clockwise, centre frequency is the resonance frequency of the narrowband light wave of v1
Mobile to high frequency direction, when rotation speed direction is counterclockwise, centre frequency is the resonance frequency of the narrowband light wave of v1 to low
Frequency direction is mobile, and rotation speed is bigger, and centre frequency is that the offset of the resonance frequency of the narrowband light wave of v1 is bigger；
Clockwise transmission and resonance occurs for the narrowband light wave that centre frequency is v2 in fiber annular resonant cavity, resonance
Frequency changes with rotation speed, and when rotation speed direction is clockwise, centre frequency is the resonance frequency of the narrowband light wave of v2
Mobile to low frequency direction, when rotation speed direction is counterclockwise, centre frequency is the resonance frequency of the narrowband light wave of v2 to height
Frequency direction is mobile, and rotation speed is bigger, and centre frequency is that the offset of the resonance frequency of the narrowband light wave of v2 is bigger；
If v1 is greater than v2, when rotation speed direction is clockwise, centre frequency is the resonance frequency of the narrowband light wave of v1
The resonance frequency of the rate narrowband light wave that mobile, centre frequency is v2 to high frequency direction is mobile to low frequency direction, therefore, centre frequency
The difference of resonance frequency increases with the increase of rotation speed between the narrowband light wave that narrowband light wave and centre frequency for v1 are v2；
When rotation speed direction is counterclockwise, centre frequency is that the resonance frequency of the narrowband light wave of v1 is mobile to low frequency direction, center
Frequency is that the resonance frequency of the narrowband light wave of v2 is mobile to high frequency direction, therefore, narrowband light wave and the center that centre frequency is v1
The difference of resonance frequency is reduced with the increase of rotation speed between the narrowband light wave that frequency is v2；
If v1 is less than v2, when rotation speed direction is clockwise, centre frequency is the resonance frequency of the narrowband light wave of v1
The resonance frequency of the rate narrowband light wave that mobile, centre frequency is v2 to high frequency direction is mobile to low frequency direction, therefore, centre frequency
The difference of resonance frequency is reduced with the increase of rotation speed between the narrowband light wave that narrowband light wave and centre frequency for v1 are v2；
When rotation speed direction is counterclockwise, centre frequency is that the resonance frequency of the narrowband light wave of v1 is mobile to low frequency direction, center
Frequency is that the resonance frequency of the narrowband light wave of v2 is mobile to high frequency direction, therefore, narrowband light wave and the center that centre frequency is v1
The difference of resonance frequency increases with the increase of rotation speed between the narrowband light wave that frequency is v2；
Therefore, can the narrowband light wave for being v1 by centre frequency and centre frequency be v2 narrowband light wave between resonance frequency difference
Value, can obtain the size and Orientation of rotation speed simultaneously；
Spectrometer 10 receives the humorous of the narrowband light wave that resonance spectrum, the centre frequency of the narrowband light wave that centre frequency is v1 are v2
Vibration spectrum, and after the resonance spectrum of the two is changed into electric signal, it is sent into signal processing and output system 11, signal processing and output system
System 11 obtains the resonance frequency for the narrowband light wave that resonance frequency, the centre frequency of the narrowband light wave that centre frequency is v1 are v2 respectively
The difference of resonance frequency, obtains simultaneously between the narrowband light wave that rate, the narrowband light wave for being v1 by centre frequency and centre frequency are v2
The size and Orientation of rotation speed, finally, signal processing and output system 11 export gyro output signals, gyro output signals packet
Size containing rotation speed and direction.
The working principle of signal processing and output system 11: spectrometer 10 receives the humorous of the narrowband light wave that centre frequency is v1
The resonance spectrum of vibration spectrum, the narrowband light wave that centre frequency is v2, and after the resonance spectrum of the two is changed into electric signal, it is sent into band logical filter
After wave circuit 11-1, bandwidth-limited circuit 11-1 carry out bandpass filtering to the electric signal of resonance spectrum, it is sent to amplifying circuit 11-
2, it after amplifying circuit 11-2 amplifies the electric signal of resonance spectrum, is sent to and extracts output circuit 11-3, extract output electricity
Road 11-3 obtains the resonance frequency for the narrowband light wave that resonance frequency, the centre frequency of the narrowband light wave that centre frequency is v1 are v2 respectively
Rate, and the narrowband light wave for being v1 by centre frequency and centre frequency be v2 narrowband light wave between resonance frequency difference, obtain simultaneously
The size and Orientation of rotation speed is obtained, finally, extracting output circuit 11-3 exports gyro output signals, gyro output signals include
Rotation speed size and direction.
Claims (3)
1. a kind of double work frequency optical fibre gyro, including light source (1), Polarization Controller (2), fiber optic splitter (3), the first optical fiber
Grating (4), the first wavelength division multiplexer (5), fiber coupler (6), fiber optic loop (7), the second wavelength division multiplexer (8), the second optical fiber
The light output end of grating (9), spectrometer (10), signal processing and output system (11), light source (1) connects Polarization Controller (2)
Light input end, Polarization Controller (2) light output end connection fiber optic splitter (3) light input end, the electricity of spectrometer (10)
The electric signal input end of the processing of signal output end connection signal and output system (11), it is characterised in that:
The light input end of the first light output end connection the first fiber grating (4) of the fiber optic splitter (3), the first optical fiber light
The light input end of the light output end connection the first wavelength division multiplexer (5) of grid (4), the light input and output of the first wavelength division multiplexer (5)
The light output end of first light input/output port of end connection fiber coupler (6), the first wavelength division multiplexer (5) connects spectrometer
(10) the first light input of the first light input end, the second light input/output port connection fiber optic loop (7) of fiber coupler (6) is defeated
Outlet, the second light input/output port of third light input/output port connection fiber optic loop (7) of fiber coupler (6)；The light
Fine coupler (6) and fiber optic loop (7) constitute fiber annular resonant cavity, transmit in opposite directions in the fiber annular resonant cavity there are two
Light wave；
The light input end of the second light output end connection the second fiber grating (9) of the fiber optic splitter (3), the second optical fiber light
The light input end of the light output end connection the second wavelength division multiplexer (8) of grid (9), the light input and output of the second wavelength division multiplexer (8)
The light output end of 4th light input/output port of end connection fiber coupler (6), the second wavelength division multiplexer (8) connects spectrometer
(10) the second light input end；
The centre of homology frequency of first fiber grating (4) is different from the centre of homology frequency of the second fiber grating (9)；
First fiber grating (4) and the second fiber grating (9) is narrowband transmission-type fiber grating；
The light source (1) is wideband light source, and its spectral region includes the centre of homology frequency of the first fiber grating (4), the
The centre of homology frequency of two fiber gratings (9)；
The work frequency of the centre of homology frequency of first fiber grating (4), the light input end of the first wavelength division multiplexer (5)
Rate, the second wavelength division multiplexer (8) light output end working frequency, three's frequency is identical；
The work frequency of the centre of homology frequency of second fiber grating (9), the light input end of the second wavelength division multiplexer (8)
Rate, the first wavelength division multiplexer (5) light output end working frequency, three's frequency is identical；
The first light output end and the second light output end of the fiber optic splitter (3) export the two-beam transmitted in opposite directions respectively
Wave, spectrometer (10) by the resonance spectrum for receiving two-beam wave carry out processing be changed into electric signal after, by signal processing and output
System (11) is processed into the difference of the resonance frequency of two-beam wave, then output signal, the rotation speed comprising this optical fibre gyro
Size and direction.
2. a kind of double work frequency optical fibre gyro according to claim 1, it is characterised in that: respectively by the optical fiber point
The frequency of first light output end of beam device (3) and the two-beam wave of the second light output end output transmitted in opposite directions is different.
3. a kind of double work frequency optical fibre gyro according to claim 1 or 2, it is characterised in that: the signal processing
And output system (11) includes bandwidth-limited circuit (11-1), amplifying circuit (11-2) and extracts output circuit (11-3)；Spectrum
The electric signal input end of electrical signal connection bandwidth-limited circuit (11-1) of instrument (10), bandwidth-limited circuit (11-1)
Electrical signal connects the electric signal input end of amplifying circuit (11-2), the electrical signal connection of amplifying circuit (11-2)
The electric signal input end of output circuit (11-3) is extracted, the electrical signal output gyro output of output circuit (11-3) is extracted
Signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029731.3A CN109029413B (en) | 2018-09-05 | 2018-09-05 | Double-working-frequency optical fiber gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029731.3A CN109029413B (en) | 2018-09-05 | 2018-09-05 | Double-working-frequency optical fiber gyroscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109029413A true CN109029413A (en) | 2018-12-18 |
| CN109029413B CN109029413B (en) | 2022-01-04 |
Family
ID=64623389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811029731.3A Active CN109029413B (en) | 2018-09-05 | 2018-09-05 | Double-working-frequency optical fiber gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109029413B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486939A (en) * | 2020-04-24 | 2020-08-04 | 中山大学 | Ultrasonic measuring device for realizing optical path and polarization state regulation and control based on SAGNAC principle |
| US20220349713A1 (en) * | 2020-08-06 | 2022-11-03 | Dalian University Of Technology | White light interferometric fiber-optic gyroscope based on rhombic optical path difference bias structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404190A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Optical fiber laser with multi-wavelength output |
| CN101886925A (en) * | 2010-05-27 | 2010-11-17 | 北京大学 | Multi-wavelength interference type optical fiber gyro based on carrier modulation |
| CN102650524A (en) * | 2012-04-25 | 2012-08-29 | 北京航空航天大学 | Differential dual-interference type closed loop fiber optic gyroscope based on birefringence modulation of wide frequency light source |
| KR20120122612A (en) * | 2011-04-29 | 2012-11-07 | 국방과학연구소 | Optical fiber sensor system using an optical spectrometer |
| CN103115628A (en) * | 2013-01-23 | 2013-05-22 | 北京航空航天大学 | Testing device and method for resonant mode optical gyroscope scale factor |
| US20130271770A1 (en) * | 2012-04-12 | 2013-10-17 | Honeywell International Inc. | Resonator fiber optic gyroscope utilizing laser frequency combs |
| CN104049099A (en) * | 2013-03-12 | 2014-09-17 | 诺思罗普·格鲁曼·利特夫有限责任公司 | Rotation rate sensor with fiber-optic Sagnac interferometer and control method thereof |
| CN105157693A (en) * | 2015-09-22 | 2015-12-16 | 深圳大学 | Annular resonant cavity and resonant fiber-optic gyroscope |
| CN105547277A (en) * | 2016-03-07 | 2016-05-04 | 东北林业大学 | Fiber-optic gyroscope based on self-interference optical fiber ring resonator |
| CN106679643A (en) * | 2016-12-21 | 2017-05-17 | 东北林业大学 | Self-reflective optical fiber gyroscope based on fiber bragg grating |
-
2018
- 2018-09-05 CN CN201811029731.3A patent/CN109029413B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404190A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Optical fiber laser with multi-wavelength output |
| CN101886925A (en) * | 2010-05-27 | 2010-11-17 | 北京大学 | Multi-wavelength interference type optical fiber gyro based on carrier modulation |
| KR20120122612A (en) * | 2011-04-29 | 2012-11-07 | 국방과학연구소 | Optical fiber sensor system using an optical spectrometer |
| US20130271770A1 (en) * | 2012-04-12 | 2013-10-17 | Honeywell International Inc. | Resonator fiber optic gyroscope utilizing laser frequency combs |
| CN102650524A (en) * | 2012-04-25 | 2012-08-29 | 北京航空航天大学 | Differential dual-interference type closed loop fiber optic gyroscope based on birefringence modulation of wide frequency light source |
| CN103115628A (en) * | 2013-01-23 | 2013-05-22 | 北京航空航天大学 | Testing device and method for resonant mode optical gyroscope scale factor |
| CN104049099A (en) * | 2013-03-12 | 2014-09-17 | 诺思罗普·格鲁曼·利特夫有限责任公司 | Rotation rate sensor with fiber-optic Sagnac interferometer and control method thereof |
| CN105157693A (en) * | 2015-09-22 | 2015-12-16 | 深圳大学 | Annular resonant cavity and resonant fiber-optic gyroscope |
| CN105547277A (en) * | 2016-03-07 | 2016-05-04 | 东北林业大学 | Fiber-optic gyroscope based on self-interference optical fiber ring resonator |
| CN106679643A (en) * | 2016-12-21 | 2017-05-17 | 东北林业大学 | Self-reflective optical fiber gyroscope based on fiber bragg grating |
Non-Patent Citations (2)
| Title |
|---|
| HE TIAN，等: "Rotation Sensing Based on the Sagnac Effect in the Self-Interference Add–Drop Resonator", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
| 何聂，等: "光纤陀螺中的相位差与谐振频率差的推导及理论分析", 《应用科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486939A (en) * | 2020-04-24 | 2020-08-04 | 中山大学 | Ultrasonic measuring device for realizing optical path and polarization state regulation and control based on SAGNAC principle |
| US20220349713A1 (en) * | 2020-08-06 | 2022-11-03 | Dalian University Of Technology | White light interferometric fiber-optic gyroscope based on rhombic optical path difference bias structure |
| US11692827B2 (en) * | 2020-08-06 | 2023-07-04 | Dalian University Of Technology | White light interferometric fiber-optic gyroscope based on rhombic optical path difference bias structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109029413B (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103115633B (en) | Utilize phase generated carrier to reduce and interfere path loose (instead) to penetrate the method for light interference | |
| CN104567960A (en) | Coherent Brillouin optical time-domain analysis sensing system based on phase modulation probe light | |
| CN104202090B (en) | The microwave signal long-distance optical fiber steady phase transmitting device of optically-based phase conjugation | |
| JP2002527731A (en) | Fiber type optical sensor | |
| CN109556594A (en) | Optical fibre gyro based on fiber annular resonant cavity inducing transparent and sink effect | |
| CN113315573B (en) | Optical-assisted broadband microwave instantaneous frequency measurement method | |
| CN107515017A (en) | A kind of optical frequency domain reflectometer of light wave frequency shift modulation | |
| CN109029413A (en) | A kind of double work frequency optical fibre gyro | |
| JPH0537469A (en) | Optical clock extracting circuit | |
| CN105806379B (en) | Weak reflective fiber Bragg grating-enamel pool cavity sensor demodulating system | |
| CN109459011A (en) | The parallel optical fibre gyro of dicyclo resonant cavity | |
| CN111578924B (en) | Optical gyroscope based on vernier effect of optical resonant cavity | |
| CN108332735A (en) | Resonance type optical fiber gyro coherent demodulation system and method based on additional beam interference | |
| CN104466620A (en) | Frequency stabilization type photoproduction microwave signal source based on optical microcavity | |
| CN110530497A (en) | Interference-type optical fiber vibrating sensing demodulating system and method based on optical-electronic oscillator | |
| CN104655185A (en) | Time-domain analysis sensing system for coherent Brillouin light on basis of intensity modulation detecting light | |
| CN105612701A (en) | System and method using spectral shaping and expanded channel spacing | |
| CN105490769B (en) | Polarize unrelated from coherent OFDM fibre-optic transmission system (FOTS) and transmission method | |
| CN105547277B (en) | Optical fibre gyro based on self-interference fiber annular resonant cavity | |
| US8160443B2 (en) | Calibration factor for interferometric optical signal-to-noise ratio measurement | |
| US8160442B2 (en) | Interferometric optical signal-to-noise ratio measurement using a calibration factor | |
| JP4909401B2 (en) | Method and apparatus for optically filtering communication signals | |
| JPH0756955B2 (en) | Polarization control method | |
| CN106679643B (en) | Self-reflection type optical fiber gyroscope based on optical fiber grating | |
| CN105157693B (en) | A kind of ring resonator and its resonance type optical fiber gyro |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |