CN105676485B - A kind of full fiber type electrooptic modulator based on D type twin-core fiber - Google Patents
A kind of full fiber type electrooptic modulator based on D type twin-core fiber Download PDFInfo
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- CN105676485B CN105676485B CN201610164328.6A CN201610164328A CN105676485B CN 105676485 B CN105676485 B CN 105676485B CN 201610164328 A CN201610164328 A CN 201610164328A CN 105676485 B CN105676485 B CN 105676485B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/061—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on electro-optical organic material
- G02F1/065—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on electro-optical organic material in an optical waveguide structure
Abstract
The invention discloses a kind of full fiber type electrooptic modulators based on D type twin-core fiber, belong to special optical fiber, fiber optic communication, field of signal processing.Centrally located fuse (2) connect with input terminal single mode optical fiber in D type twin-core fiber (1), and the fuse (3) by proximal border is connect with output end single mode optical fiber.Electro-optic polymer (4) are coated on the surface of D type twin-core fiber (1), electro-optic polymer two sides are coated with metal electrode (5), and are connected with voltage-drop loading device (6).When on-load voltage (6), the refractive index of electro-optic polymer (4) is with voltage change, fuse (3) close to electro-optic polymer (4) is sensitive to its variations in refractive index, and centrally located fuse (2), insensitive to its.Change load electro-optic polymer (4) both ends voltage (6), the degree of coupling of two fuses change, it can be achieved that light intensity modulated.
Description
Technical field
The present invention relates to a kind of full fiber type electrooptic modulators based on D type twin-core fiber, belong to special optical fiber, optical fiber
Communication, field of signal processing.
Background technique
The support of the too busy to get away Networks of Fiber Communications of the rapid development of modern communications, electronics and computer technology, and photoelectricity
Frequency conversion, modulation, switch, deflection in sub- technology are indispensable technologies during optical information processing.Therefore, high speed electro-optical tune
Device processed has become important devices irreplaceable in optical communication network.Electro-optical Modulation is the electrooptic effect (Pu Ke due to medium
That effect or Kerr effect etc.), when applying electric field in electro-optical medium region, refractive index can change, so as to cause light
The phenomenon that phase, the luminous intensity etc. of field change.
Electrooptic modulator mainly has LiNbO at present3Modulator, GaAs modulator and Electro optic polymer modultor.LiNbO3It is brilliant
Body is the maximum ferroelectric crystal of electro-optic coefficient in inorganic material, and electro-optical properties are superior, is high speed on current optical communication backbone
The primary modulation device of long range.But since its refractive index differs greatly with ordinary optic fibre, there are biggish wave vector mismatch, loss compared with
Greatly.With LiNbO3Crystal phase ratio, the insertion loss of GaAs is smaller, bandwidth is larger, but due to the limitation of material electro-optical properties itself
Property, the promotion of device overall performance are restricted, and expensive.With LiNbO3, the materials such as GaAs compare, electro-optic polymer,
Have many advantages, such as that electro-optic coefficient height, fast response time, manufacture craft is simple, insertion loss is small, Electro optic polymer modultor and quilt
Referred to as next-generation modulator.
Electrooptic modulator mainly uses the MZ type structure based on planar waveguide at present, is coated with electrode in electrooptical material two sides,
By on-load voltage on the electrode, cause to generate electric field in electrooptical material region, the refractive index of electrooptical material is alive with applying
Difference changes.By controlling the size of voltage, achieve the purpose that the modulation such as the phase to light, intensity.But dielectric material
Inherent loss restricts the further development of electrooptic modulator always, in current report, even electro-optic polymer, and minimum damage
Consumption also reaches 0.7dB/cm, and much larger than the inherent loss of optical fiber, and the junction loss of MZ planar waveguide and optical fiber is larger, serious
Reduce the performance of device.
Summary of the invention
Problem to be solved by this invention be overcome lossy existing for current MZ type electrooptic modulator, structure is complicated this
One problem.A kind of full fiber type electrooptical modulator structure based on D type twin-core fiber is provided.
Technical solution of the present invention:
A kind of full fiber type electrooptic modulator based on D type twin-core fiber, the modulator include: D type twin-core fiber, electric light
Polymer, electrode and on-load voltage device；Specific structure are as follows:
Electro-optic polymer is coated on the surface of D type twin-core fiber, electro-optic polymer two sides are coated with metal electrode, and and voltage
Loading device is connected.
When the on-load voltage on metal electrode, the refractive index of electro-optic polymer is with voltage change, positioned at fiber optic hub
Fuse is since far from electro-optic polymer, effective refractive index is constant, and the fuse of close electro-optic polymer is to its variations in refractive index
It is sensitive.Change electrode two sides on-load voltage, it can be achieved that fiber-optic output power modulation.
Beneficial effects of the present invention are specific as follows:
This structure mainly utilizes the property of D type twin-core fiber, electro-optic polymer, realizes all -fiber modulation of luminous intensity.It should
Modulator structure is simple, flexible, low manufacture cost, junction loss is small, is greatly improved the modulating performance of modulator.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the full fiber type electrooptic modulator based on D type twin-core fiber.
Fig. 2 is the structural schematic diagram that D type twin-core fiber is connect with general single mode fiber.
Fig. 3 is variation schematic diagram of the output intensity with voltage.
Output light spectrogram when Fig. 4 is no applied voltage.
Fig. 5 is the output light spectrogram applied when voltage is 20V.
Fig. 6 is the output light spectrogram applied when voltage is 40V.
Specific embodiment
A kind of 1 to 6 pair of full fiber type electrooptic modulator based on D type twin-core fiber is further retouched with reference to the accompanying drawing
It states.
Embodiment one
A kind of full fiber type electrooptic modulator based on D type twin-core fiber, the structure include: D type twin-core fiber (1), electricity
Photopolymer (4), metal electrode (5), voltage-drop loading device (6), wherein D type twin-core fiber includes the different core in two positions
Sub (2), (3).Specific structure are as follows:
Electro-optic polymer (4) are coated on the surface of D type twin-core fiber (1), electro-optic polymer two sides are coated with metal electrode
(5), and with voltage-drop loading device (6) it is connected.
Full fiber type electrooptic modulator based on D type twin-core fiber in the present embodiment is connect with single mode optical fiber, structure such as Fig. 2
It is shown.Input terminal (10) connect by single mode optical fiber (8) with center core (13), output end (11) pass through single mode optical fiber (9) and
Fuse (12) by proximal border connects.It adjusts on-load voltage (6), output light intensity is as shown in Figure 3 with the variation of voltage.
Embodiment two
A kind of full fiber type electrooptic modulator based on D type twin-core fiber, the structure include: D type twin-core fiber (1), electricity
Photopolymer (4), metal electrode (5), voltage-drop loading device (6), wherein D type twin-core fiber includes the different core in two positions
Sub (2), (3).Specific structure are as follows:
Electro-optic polymer (4) are coated on the surface of D type twin-core fiber (1), electro-optic polymer two sides are coated with metal electrode
(5), and with voltage-drop loading device (6) it is connected.
Full fiber type electrooptic modulator based on D type twin-core fiber in the present embodiment is connect with single mode optical fiber, structure such as Fig. 2
It is shown.Input terminal (10) connect by single mode optical fiber (8) with center core (13), output end (11) pass through single mode optical fiber (9) and
Fuse (12) by proximal border connects.When on-load voltage (6) are 0V, output light spectrogram is as shown in Figure 4.
Embodiment three
A kind of full fiber type electrooptic modulator based on D type twin-core fiber, the structure include: D type twin-core fiber (1), electricity
Photopolymer (4), metal electrode (5), voltage-drop loading device (6), wherein D type twin-core fiber includes the different core in two positions
Sub (2), (3).Specific structure are as follows:
Electro-optic polymer (4) are coated on the surface of D type twin-core fiber (1), electro-optic polymer two sides are coated with metal electrode
(5), and with voltage-drop loading device (6) it is connected.
Full fiber type electrooptic modulator based on D type twin-core fiber in the present embodiment is connect with single mode optical fiber, structure such as Fig. 2
It is shown.Input terminal (10) connect by single mode optical fiber (8) with center core (13), output end (11) pass through single mode optical fiber (9) and
Fuse (12) by proximal border connects.When on-load voltage (6) are 20V, output light spectrogram is as shown in Figure 5.Example IV
A kind of full fiber type electrooptic modulator based on D type twin-core fiber, the structure include: D type twin-core fiber (1), electricity
Photopolymer (4), metal electrode (5), voltage-drop loading device (6), wherein D type twin-core fiber includes the different core in two positions
Sub (2), (3).Specific structure are as follows:
Electro-optic polymer (4) are coated on the surface of D type twin-core fiber (1), electro-optic polymer two sides are coated with metal electrode
(5), and with voltage-drop loading device (6) it is connected.
Full fiber type electrooptic modulator based on D type twin-core fiber in the present embodiment is connect with single mode optical fiber, structure such as Fig. 2
It is shown.Input terminal (10) connect by single mode optical fiber (8) with center core (13), output end (11) pass through single mode optical fiber (9) and
Fuse (12) by proximal border connects.When on-load voltage (6) are 40V, output light spectrogram is as shown in Figure 6.
Claims (4)
1. a kind of full fiber type electrooptic modulator based on D type twin-core fiber, it is characterised in that: the structure includes: D type twin-core light
Fine (1), electro-optic polymer (4), metal electrode (5), voltage-drop loading device (6), wherein D type twin-core fiber includes two positions
Different fuses (2,3) coats electro-optic polymer (4) on the surface of D type twin-core fiber (1), and electro-optic polymer two sides are coated with gold
Belong to electrode (5), and is connected with voltage-drop loading device (6)；Full fiber type electrooptic modulator and single mode based on D type twin-core fiber
Optical fiber connection, input terminal (10) are connect by single mode optical fiber (8) with center core (13), and output end (11) passes through single mode optical fiber
(9) it is connect with the fuse (12) by proximal border.
2. a kind of full fiber type electrooptic modulator based on D type twin-core fiber according to claim 1, it is characterised in that: D
Index distribution, radius size, the fibre core distance of the different fuse (2,3) in two positions of type twin-core fiber can be according to actual needs
It is adjusted.
3. a kind of full fiber type electrooptic modulator based on D type twin-core fiber according to claim 1, it is characterised in that:
The electrooptic modulator combines the low-loss of all -fiber and the advantage of electro-optic polymer fast response time, believes light in the modulator
It number transmits in a fiber always, and transmission loss is small.
4. a kind of full fiber type electrooptic modulator based on D type twin-core fiber according to claim 1, it is characterised in that:
The thickness of electro-optic polymer (4) is adjusted, so that two fuses (2,3) couple completely in no on-load voltage in D type twin-core fiber,
In electro-optic polymer (4) both ends on-load voltage, the degree of coupling of two fuses (2,3) changes with voltage swing, can be real
The intensity modulated of existing output light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610164328.6A CN105676485B (en) | 2016-03-22 | 2016-03-22 | A kind of full fiber type electrooptic modulator based on D type twin-core fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610164328.6A CN105676485B (en) | 2016-03-22 | 2016-03-22 | A kind of full fiber type electrooptic modulator based on D type twin-core fiber |
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| CN105676485A CN105676485A (en) | 2016-06-15 |
| CN105676485B true CN105676485B (en) | 2019-01-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106896277B (en) * | 2017-04-27 | 2020-03-17 | 北京航空航天大学 | Electric field sensor based on micro-nano optical fiber evanescent field and electro-optic polymer |
| CN108717237A (en) * | 2018-05-25 | 2018-10-30 | 北京交通大学 | A kind of modulator of the multi-layer graphene multi output mode based on D type twin-core fibers |
| CN110879488B (en) * | 2019-12-06 | 2021-01-26 | 电子科技大学 | Novel optical fiber online modulator based on lithium niobate film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047238C (en) * | 1993-08-13 | 1999-12-08 | 艾利森电话股份有限公司 | Enhancing the nonlinearity of an optical waveguide |
| CN1308731A (en) * | 1998-04-01 | 2001-08-15 | 光导研究所有限公司 | An optical body having modifiable light guiding properties |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7324732B2 (en) * | 2005-10-21 | 2008-01-29 | Fanasys, Llc | Lithium niobate coated optical fiber apparatus and method |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047238C (en) * | 1993-08-13 | 1999-12-08 | 艾利森电话股份有限公司 | Enhancing the nonlinearity of an optical waveguide |
| CN1308731A (en) * | 1998-04-01 | 2001-08-15 | 光导研究所有限公司 | An optical body having modifiable light guiding properties |
Non-Patent Citations (2)
| Title |
|---|
| Design of Thermally Poled Twin-Core Fiber Coupler With Electrical Tunability;Lin Huang et al;《IEEE PHOTONICS TECHNOLOGY LETTERS》;20150415;全文 |
| 基于相移光纤光栅有机聚合物电光调制器研究;边玉腾 et al;《光电技术应用》;20160229;第1-2章 |
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Granted publication date: 20190122 |