CN105633773A - Chirped and phase-shifted fiber bragg grating-based ring cavity Q-switched pulse laser - Google Patents
Chirped and phase-shifted fiber bragg grating-based ring cavity Q-switched pulse laser Download PDFInfo
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- CN105633773A CN105633773A CN201610160245.XA CN201610160245A CN105633773A CN 105633773 A CN105633773 A CN 105633773A CN 201610160245 A CN201610160245 A CN 201610160245A CN 105633773 A CN105633773 A CN 105633773A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
Abstract
The invention provides a fiber bragg grating-based ring cavity Q-switched pulse laser, and belongs to the fields of optical fiber communication and instruments and meters. A pump light source (101) firstly enters a laser ring cavity structure through a wavelength division multiplexer (102), is gained through a doped fiber (103) which is 2m long, passes through a photoisolator (104), a polarizer (105) and a polarization controller (106) and then passes through a piezoelectric ceramic-based chirped and phase-shifted fiber bragg grating type filter comprising a linear chirped fiber bragg grating (107), a piezoelectric ceramic (108) and an electric signal generator (109). A signal within a bandwidth range returns to the inside of a laser resonant cavity through reflection of a circulator (110) and a uniform fiber bragg grating (111); and finally a laser pulse is output from a coupler (12). The Q-switched pulse laser is achieved mainly by periodically introducing a phase shift to the linear chirped fiber bragg grating (107) through an AC signal generated by the electric signal generator (109). The pulse laser lights with different repetition frequencies can be obtained by changing the frequency of the AC signal.
Description
Technical field
The present invention relates to opticfiber communication, instrument field, specifically a kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating.
Background technology
Since first fiber grating in 1978 comes out, fiber grating is just owing to its advantage such as superior performance, flexible design is applied to communication every field. Especially fiber grating has narrow bandwidth, these two clear superiorities of reflectivity height, determine the application of fiber grating in laserresonator, and have that structure is simple based on the Q-switched pulse laser of fiber grating, repetition rate height, insertion loss are low, low cost and other advantages, therefore, the research of the Q-switched pulse laser based on fiber grating is more and more subject to the concern of Chinese scholars.
When fiber grating is applied to Q-switched pulse laser, the external devices that fiber grating carries out external modulation is generally adopted to comprise: to utilize acoustic optical devices or acoustooptic effect (" Q-switchingofanall-fiberlaserbyacousto-opticmodulationof afiberBragggrating, " OpticsExpress, vol.14, pp.1106-1112, 2006/02/062006), magnetostriction rod (" Q-switchedall-fiberlaserbasedonmagnetostrictionmodulatio nofaBragggrating, " OpticsExpress, vol.13, pp.5046-5051, 2005/06/272005) and piezoelectric ceramics (" All-FiberQ-SwitchedErbium-DopedFiberRingLaserUsingPhase-ShiftedFiberBraggGrating, " JournalofLightwaveTechnology, vol.26, pp.945-951, 2008/04/152008), to reach the object realizing regulating the loss of laserresonator, thus obtain Q impulse. but when Utilization plan one makes Q-switched pulse laser, in order to increase the impact of acousto-optic interaction, it is necessary to corroded by fiber grating, this just must reduce the stability of Optical Maser System itself. in addition, in general, laserresonator is by a fiber grating with high-reflectivity and has what the frequency-selecting fiber grating of narrow band spectrum formed. when Utilization plan two and scheme three make the Q-switched pulse laser based on fiber grating, the wave filter by the fiber grating or other types that are used as frequency selector is needed to fix, thus fix its resonance wavelength, then magnetostriction rod or piezoelectric ceramics is made to act in reflection grating, periodically regulate its resonance wavelength and frequency-selecting grating alignment, produce laser pulse, but, all being difficult to control owing to the characteristic of magnetostriction rod or piezoceramic material itself makes to be directed at each time, pulsed laser output power is unstable.
Summary of the invention
The present invention is to provide a kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating that Optical Maser System is stable and pulsed laser output power is stable. Scheme adopts piezoelectric ceramics to act on linear chirp optical fiber grating, form the chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics, the switching between frequency spectrum when frequency spectrum when not introducing phase shift of this wave filter and introducing �� phase shift, can producing exchange signal by electric signal generator to regulate, the adjustment range of frequency that this scheme can realize is 1KHz��20KHz.
The technical scheme of the present invention is:
A kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating, it is characterised in that: this pulsed laser comprises pump light source, wavelength division multiplexer, length are 2 meters doped fiber, optoisolator, the polarizer, Polarization Controller, linear chirp optical fiber grating, piezoelectric ceramics, electric signal generator, optical circulator, reflectivity are even Fiber Bragg Grating FBG, the optical fiber 90:10 coupling mechanism of 99%. Concrete on-link mode (OLM) is:
Pump light source is connected with first port on the wavelength division multiplexer left side, one end that port on the right of wavelength division multiplexer is the doped fiber of 2 meters with length is connected, length is that the other end of the doped fiber of 2 meters is connected with wherein one end of optoisolator, the other end of optoisolator is connected with wherein one end of the polarizer, the other end of the polarizer is connected with wherein one end of Polarization Controller, and the other end of Polarization Controller is connected with linear chirp optical fiber grating.
The mid-way that one of them side of piezoelectric ceramics is bonded on linear chirp optical fiber grating, two positive and negative electrodes of stacking-type piezoelectric ceramic piece are connected with the positive and negative electrode of electric signal generator respectively, define a kind of chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics.
The other end of linear chirp optical fiber grating is connected with a port on the right of optical circulator, No. two ports and the reflectivity of optical circulator be 99% even Fiber Bragg Grating FBG be connected, and reflectivity be 99% the other end of even optical fiber bragg grating unsettled, No. three ports on the optical circulator left side are connected with the port below optical fiber 90:10 coupling mechanism, the output port of 90% above optical fiber 90:10 coupling mechanism is connected with the 2nd of the wavelength division multiplexer left side the port, form a ring of light road, the output port of 10% above optical fiber 90:10 coupling mechanism is as the laser output of Q-switched laser.
Based on the chirping phase-shift optical fiber grating mode filter of piezoelectric ceramics, the frequency spectrum two kinds when its frequency spectrum has frequency spectrum when not introducing phase shift and introduces �� phase shift, the signal deciding that the switching between these two kinds of frequency spectrums is produced by electric signal generator.
Described length be the doped fiber of 2 meters fibre core in equal doping with rare-earth ions, comprise ytterbium ion, erbium ion or thulium ion.
Changing the frequency f of the exchange signal that electric signal generator produces, range of frequency is 1KHz��f��20KHz, it is possible to obtain the pulse laser of different repetition rate.
The concrete principle of work of the present invention is as follows:
The light that pump light source sends enters after the doped fiber that length is 2 meters through wavelength division multiplexer, obtain gain, again through the polarizer and Polarization Controller, enter the chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics being made up of linear chirp optical fiber grating, piezoelectric ceramics and electric signal generator. The frequency spectrum of this chirping phase-shift optical fiber grating mode filter when not introducing phase shift is consistent with the frequency spectrum of normal linear chirped fiber grating, and optical signal can not pass through from this wave filter; But, when �� phase shift is introduced in the mid-way of chirping phase-shift optical fiber grating, the transmission spectrum of this wave filter occurs an arrowband slit, it is possible to realize arrowband filtering. Further, when electric signal generator produces exchange signal function in piezoelectric ceramics, it is possible to periodically introduce �� phase shift on line style chirped fiber grating, thus periodically regulate the loss in laserresonator. In bandwidth, signal is through the reflection of annular device, exports via coupling mechanism, obtains adjustable Q laser pulse.
The useful effect that the present invention has is as follows:
The present invention proposes a kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating. This Q-switched pulse laser utilizes doped fiber as gain media, utilizing the polarization in the polarizer and Polarization Controller control laser apparatus ring cavity configuration and loss, the chirping phase-shift optical fiber grating mode filter based on stacking-type piezoelectric ceramics utilizing the electric signal generator by piezoelectric ceramics, linear chirp optical fiber grating and generation exchange signal to form carries out wavelength chooses. When electric signal generator produces exchange signal and acts on linear chirp optical fiber grating, linear chirp optical fiber grating periodically produces phase shift, thus periodically regulates the loss in laserresonator, obtains adjusting Q pulse laser. Ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating has the advantages such as structure is simple, system stability, power stability, is applicable in opticfiber communication cable. When electric signal generator produce with other based on fiber grating Q-switched pulse laser compared with, the present invention further increases the system stability of the Q-switched pulse laser based on fiber grating and the stability of pulsed laser output power.
Accompanying drawing explanation
The structural representation of a kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating of Fig. 1.
Fig. 2 based on piezoelectric ceramics chirping phase-shift optical fiber grating mode filter do not introduce phase shift and introduce �� phase shift time spectrum diagram.
Fig. 3 is based on Q impulse schematic diagram when the exchange signal frequency f=1KHz that electric signal generator produces of the ring chamber Q-switched pulse laser of chirping phase-shift optical fiber grating.
Fig. 4 is based on Q impulse schematic diagram when the exchange signal frequency f=10KHz that electric signal generator produces of the ring chamber Q-switched pulse laser of chirping phase-shift optical fiber grating.
Fig. 5 is based on Q impulse schematic diagram when the exchange signal frequency f=20KHz that electric signal generator produces of the ring chamber Q-switched pulse laser of chirping phase-shift optical fiber grating.
Embodiment
Below in conjunction with accompanying drawing 1 to 5, the ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating is further described.
Embodiment one
A kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating, as shown in Figure 1, it is characterized in that: this Q-switched pulse laser comprises, pump light source 101, wavelength division multiplexer 102, length to be 2 meters of doped fibers 103, optoisolator 104, the polarizer 105, Polarization Controller 106, linear chirp optical fiber grating 107, piezoelectric ceramics 108, electric signal generator 109, optical circulator 110, reflectivity be 99% even Fiber Bragg Grating FBG 111, optical fiber 90:10 coupling mechanism 112; Concrete on-link mode (OLM) is:
Pump light source 101 is connected with first port 1021 on wavelength division multiplexer 102 left side, one end that port 1022 on the right of wavelength division multiplexer 102 is the doped fiber 103 of 2 meters with length is connected, length is that the other end of the doped fiber 103 of 2 meters is connected with wherein one end of optoisolator 104, the other end of optoisolator 104 is connected with wherein one end of the polarizer 105, the other end of the polarizer 105 is connected with wherein one end of Polarization Controller 106, and the other end of Polarization Controller 106 is connected with linear chirp optical fiber grating 107.
The mid-way that one of them side of piezoelectric ceramics 108 is bonded on linear chirp optical fiber grating 107, two positive and negative electrodes of piezoelectric ceramic piece 108 respectively positive and negative electrode with electric signal generator 109 be connected, define a kind of chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics.
The other end of linear chirp optical fiber grating 107 is connected with a port 1101 on the right of optical circulator 110, No. two ports 1102 and the reflectivity of optical circulator 110 be 99% even Fiber Bragg Grating FBG 111 be connected, and reflectivity be 99% the other end of even optical fiber bragg grating 111 unsettled, No. three ports 1103 on optical circulator 110 left side are connected with the port 1121 below optical fiber 90:10 coupling mechanism 112, the output port 1122 of 90% above optical fiber 90:10 coupling mechanism 112 is connected with the 2nd port 1023 on wavelength division multiplexer 102 left side, form a ring of light road, the output port 1123 of 10% above optical fiber 90:10 coupling mechanism 112 is as the laser output of Q-switched laser.
Based on the chirping phase-shift optical fiber grating mode filter of piezoelectric ceramics, the frequency spectrum 22 two kinds when its frequency spectrum has the frequency spectrum 21 when not introducing phase shift and introduces �� phase shift, the signal deciding that the switching between these two kinds of frequency spectrums is produced by electric signal generator 109.
Described length is the doped fiber of 2 meters is the optical fiber being mixed with ytterbium ion in fibre core.
Change the frequency f=1KHz of the exchange signal that electric signal generator 109 produces, it is possible to obtaining the adjustable Q laser pulse that repetition rate is 1KHz, result is as shown in Figure 3.
Embodiment two
A kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating, as shown in Figure 1, it is characterized in that: this Q-switched pulse laser comprises, pump light source 101, wavelength division multiplexer 102, length to be 2 meters of doped fibers 103, optoisolator 104, the polarizer 105, Polarization Controller 106, linear chirp optical fiber grating 107, piezoelectric ceramics 108, electric signal generator 109, optical circulator 110, reflectivity be 99% even Fiber Bragg Grating FBG 111, optical fiber 90:10 coupling mechanism 112; Concrete on-link mode (OLM) is:
Pump light source 101 is connected with first port 1021 on wavelength division multiplexer 102 left side, one end that port 1022 on the right of wavelength division multiplexer 102 is the doped fiber 103 of 2 meters with length is connected, length is that the other end of the doped fiber 103 of 2 meters is connected with wherein one end of optoisolator 104, the other end of optoisolator 104 is connected with wherein one end of the polarizer 105, the other end of the polarizer 105 is connected with wherein one end of Polarization Controller 106, and the other end of Polarization Controller 106 is connected with linear chirp optical fiber grating 107.
The mid-way that one of them side of piezoelectric ceramics 108 is bonded on linear chirp optical fiber grating 107, two positive and negative electrodes of piezoelectric ceramic piece 108 respectively positive and negative electrode with electric signal generator 109 be connected, define a kind of chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics.
The other end of linear chirp optical fiber grating 107 is connected with a port 1101 on the right of optical circulator 110, No. two ports 1102 and the reflectivity of optical circulator 110 be 99% even Fiber Bragg Grating FBG 111 be connected, and reflectivity be 99% the other end of even optical fiber bragg grating 111 unsettled, No. three ports 1103 on optical circulator 110 left side are connected with the port 1121 below optical fiber 90:10 coupling mechanism 112, the output port 1122 of 90% above optical fiber 90:10 coupling mechanism 112 is connected with the 2nd port 1023 on wavelength division multiplexer 102 left side, form a ring of light road, the output port 1123 of 10% above optical fiber 90:10 coupling mechanism 112 is as the laser output of Q-switched laser.
Based on the chirping phase-shift optical fiber grating mode filter of piezoelectric ceramics, the frequency spectrum 22 two kinds when its frequency spectrum has the frequency spectrum 21 when not introducing phase shift and introduces �� phase shift, the signal deciding that the switching between these two kinds of frequency spectrums is produced by electric signal generator 109.
Described length is the doped fiber of 2 meters is the optical fiber being mixed with erbium ion in fibre core.
Change the frequency f=10KHz of the exchange signal that electric signal generator 109 produces, it is possible to obtaining the adjustable Q laser pulse that repetition rate is 10KHz, result is as shown in Figure 4.
Embodiment three
A kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating, as shown in Figure 1, it is characterized in that: this Q-switched pulse laser comprises, pump light source 101, wavelength division multiplexer 102, length to be 2 meters of doped fibers 103, optoisolator 104, the polarizer 105, Polarization Controller 106, linear chirp optical fiber grating 107, piezoelectric ceramics 108, electric signal generator 109, optical circulator 110, reflectivity be 99% even Fiber Bragg Grating FBG 111, optical fiber 90:10 coupling mechanism 112; Concrete on-link mode (OLM) is:
Pump light source 101 is connected with first port 1021 on wavelength division multiplexer 102 left side, one end that port 1022 on the right of wavelength division multiplexer 102 is the doped fiber 103 of 2 meters with length is connected, length is that the other end of the doped fiber 103 of 2 meters is connected with wherein one end of optoisolator 104, the other end of optoisolator 104 is connected with wherein one end of the polarizer 105, the other end of the polarizer 105 is connected with wherein one end of Polarization Controller 106, and the other end of Polarization Controller 106 is connected with linear chirp optical fiber grating 107.
The mid-way that one of them side of piezoelectric ceramics 108 is bonded on linear chirp optical fiber grating 107, two positive and negative electrodes of piezoelectric ceramic piece 108 respectively positive and negative electrode with electric signal generator 109 be connected, define a kind of chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics.
The other end of linear chirp optical fiber grating 107 is connected with a port 1101 on the right of optical circulator 110, No. two ports 1102 and the reflectivity of optical circulator 110 be 99% even Fiber Bragg Grating FBG 111 be connected, and reflectivity be 99% the other end of even optical fiber bragg grating 111 unsettled, No. three ports 1103 on optical circulator 110 left side are connected with the port 1121 below optical fiber 90:10 coupling mechanism 112, the output port 1122 of 90% above optical fiber 90:10 coupling mechanism 112 is connected with the 2nd port 1023 on wavelength division multiplexer 102 left side, form a ring of light road, the output port 1123 of 10% above optical fiber 90:10 coupling mechanism 112 is as the laser output of Q-switched laser.
Based on the chirping phase-shift optical fiber grating mode filter of piezoelectric ceramics, the frequency spectrum 22 two kinds when its frequency spectrum has the frequency spectrum 21 when not introducing phase shift and introduces �� phase shift, the signal deciding that the switching between these two kinds of frequency spectrums is produced by electric signal generator 109.
Described length is the doped fiber of 2 meters is the optical fiber being mixed with thulium ion in fibre core.
Change the frequency f=20KHz of the exchange signal that electric signal generator 109 produces, it is possible to obtaining the adjustable Q laser pulse that repetition rate is 20KHz, result is as shown in Figure 5.
Claims (2)
1. the ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating, it is characterised in that:
This pulsed laser comprises pump light source (101), wavelength division multiplexer (102), length is the doped fiber (103) of 2 meters, optoisolator (104), the polarizer (105), Polarization Controller (106), linear chirp optical fiber grating (107), piezoelectric ceramics (108), electric signal generator (109), optical circulator (110), reflectivity is the even Fiber Bragg Grating FBG (111) of 99%, optical fiber 90:10 coupling mechanism (112). concrete on-link mode (OLM) is:
Pump light source (101) is connected with first port (1021) on wavelength division multiplexer (102) left side, one end that the port (1022) on wavelength division multiplexer (102) the right is the doped fiber (103) of 2 meters with length is connected, length is that the other end of the doped fiber (103) of 2 meters is connected with wherein one end of optoisolator (104), the other end of optoisolator (104) is connected with wherein one end of the polarizer (105), the other end of the polarizer (105) is connected with wherein one end of Polarization Controller (106), the other end of Polarization Controller (106) is connected with linear chirp optical fiber grating (107).
The mid-way that one of them side of piezoelectric ceramics (108) is bonded on linear chirp optical fiber grating (107), two positive and negative electrodes of stacking-type piezoelectric ceramic piece (108) respectively positive and negative electrode with electric signal generator (109) be connected, define a kind of chirping phase-shift optical fiber grating mode filter based on piezoelectric ceramics.
The other end of linear chirp optical fiber grating (107) is connected with a port (1101) on optical circulator (110) the right, No. two ports (1102) of optical circulator (110) with reflectivity be 99% even Fiber Bragg Grating FBG (111) be connected, and reflectivity be 99% the other end of even optical fiber bragg grating (111) unsettled, No. three ports (1103) on optical circulator (110) left side are connected with the port (1121) below optical fiber 90:10 coupling mechanism (112), the output port (1122) of 90% above optical fiber 90:10 coupling mechanism (112) is connected with the 2nd port (1023) on wavelength division multiplexer (102) left side, form a ring of light road, the output port (1123) of 10% above optical fiber 90:10 coupling mechanism (112) is as the laser output of Q-switched laser.
Based on the chirping phase-shift optical fiber grating mode filter of piezoelectric ceramics, frequency spectrum (22) two kinds when its frequency spectrum has frequency spectrum when not introducing phase shift (21) and introduces �� phase shift, the signal deciding that the switching between these two kinds of frequency spectrums is produced by electric signal generator (109).
2. a kind of ring chamber Q-switched pulse laser based on chirping phase-shift optical fiber grating according to claim 1, it is characterised in that:
Described length be the doped fiber (103) of 2 meters fibre core in equal doping with rare-earth ions, comprise ytterbium ion, erbium ion or thulium ion.
Changing the frequency f of the exchange signal that electric signal generator (109) produces, range of frequency is 1KHz��f��20KHz, it is possible to obtain the pulse laser of different repetition rate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656402A (en) * | 2016-12-12 | 2017-05-10 | 南京理工大学 | Tunable true-time-delay experimental device and method based on discrete LCFBG and optical fibre reflector |
| CN110687734A (en) * | 2019-10-18 | 2020-01-14 | 北方工业大学 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
| CN112422194A (en) * | 2020-11-19 | 2021-02-26 | 北方工业大学 | All-optical network node picosecond pulse signal relative time difference corrector |
| CN113794519A (en) * | 2021-06-24 | 2021-12-14 | 北京信息科技大学 | Tunable multiple frequency millimeter wave generator based on PS-CFBG |
| US11233372B2 (en) * | 2019-06-25 | 2022-01-25 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
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2016
- 2016-03-21 CN CN201610160245.XA patent/CN105633773B/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
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| 《JOURNAL OF LIGHTWAVE TECHNOLOGH》 * |
| 《OPTICS & LASER TECHNOLOGY》 * |
| 《光学学报》 * |
| 《光电技术应用》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656402A (en) * | 2016-12-12 | 2017-05-10 | 南京理工大学 | Tunable true-time-delay experimental device and method based on discrete LCFBG and optical fibre reflector |
| CN106656402B (en) * | 2016-12-12 | 2018-07-31 | 南京理工大学 | Tunable true delay experimental provision and method based on discrete LCFBG and fiber reflector |
| US11233372B2 (en) * | 2019-06-25 | 2022-01-25 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
| US11817672B2 (en) | 2019-06-25 | 2023-11-14 | Lumentum Operations Llc | Femtosecond pulse stretching fiber oscillator |
| CN110687734A (en) * | 2019-10-18 | 2020-01-14 | 北方工业大学 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
| CN112422194A (en) * | 2020-11-19 | 2021-02-26 | 北方工业大学 | All-optical network node picosecond pulse signal relative time difference corrector |
| CN113794519A (en) * | 2021-06-24 | 2021-12-14 | 北京信息科技大学 | Tunable multiple frequency millimeter wave generator based on PS-CFBG |
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