CN110320590A - A kind of production method of machinery chirp long period optic fiber grating - Google Patents
A kind of production method of machinery chirp long period optic fiber grating Download PDFInfo
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- CN110320590A CN110320590A CN201910412591.6A CN201910412591A CN110320590A CN 110320590 A CN110320590 A CN 110320590A CN 201910412591 A CN201910412591 A CN 201910412591A CN 110320590 A CN110320590 A CN 110320590A
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- chirp
- steel needle
- heat
- shrink tube
- long period
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
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- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
A kind of production method of machinery chirp long period optic fiber grating, the machinery chirp long period optic fiber grating includes heat-shrink tube, tempreature bulb, two steel needles and an optical fiber with chirped periodic screw thread, the steel needle produces chirp Threaded steel needle by screw thread process, this chirp Threaded steel needle is put between heat-shrink tube and tempreature bulb using automatic needle inserting machine and automatic pipe reducing machine, it shrinks in advance at both ends, complete encapsulation, then optical fiber is put into inside tempreature bulb, heat-shrink tube is heated using heat-shrink tube baking oven, chirp Threaded steel needle is suppressed so as to cause heat-shrink tube, chirp Threaded steel needle forms pressing result to optical fiber, generate chirp long period optic fiber grating.The present invention provides a kind of simplified technique, the production method for the machinery chirp long period optic fiber grating that process flow is mature, low in cost, performance is stable.
Description
Technical field
The present invention relates to sensory field of optic fibre and optic communication passive device manufacture craft field more particularly to a kind of mechanical systems
The production method of chirp long period optic fiber grating (MCLPFG).
Background technique
Along with the fast development of economic society, the promotion that optical fiber technology is leaped in recent decades, increasingly
More fiber functions devices are furtherd investigate.Wherein long-period fiber grating (LPFG) development is swift and violent, numerous optical fiber without
Show one's talent in the device of source, leads the technological revolution of information technology field.Fiber grating is fiber core refractive index cyclically-varying
Device, it is a kind of frequency spectrum selection element, small in size, be simple to manufacture, easily connect with other optical fibre devices, be may make up a variety of complete
Optical fibre device.Wherein chirp long period optic fiber grating (CLPFG) has wider bandwidth, and multi-wavelength may be implemented in transmission spectrum
Band resistance is suitable for multi-wavelength and filters, and has great application prospect in communication and sensory field.
The research of chirp long period grating (CLPFG) largely still rests on theoretical research stage, existing system at present
Making technology mainly has U-V writing method and machinery pressure force method.The long period optical fiber light of machinery LPFG (MLPFG) and uv induction
Grid (UV-LPFG) are compared, and can be easily carried out to form grating, and can adjust resonance wave by changing external pressure
The peak loss of strong point.Typical MLPFG production method is by periodic grooves and plate or two periodic grooves pair
Optical fiber applies pressure.Other methods are also: being wound using nylon wire, utilize spring, the graphite rod or wire of periodic arrangement
Compacting etc..But almost all of MLPFG cannot be detached from complicated, heavy, large volume force application apparatus and be independently operated, this
Greatly limit the application range and occasion of MLPFG.
So the CLPFG proposed at present lacks experiment method of producing, the production method and device of MLPFG bulky complex again,
Which results in the production of MCLPFG, there is very big problems.
Summary of the invention
In order to solve the problems, such as that the existing production of machinery chirp long period grating (MCLPFG) is difficult, the present invention provides one
Kind simplifies the production side of technique, the machinery chirp long period optic fiber grating that process flow is mature, low in cost, performance is stable
Method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of production method of machinery chirp long period optic fiber grating, the machinery chirp long period optic fiber grating packet
Heat-shrink tube, tempreature bulb, two steel needles and an optical fiber with chirped periodic screw thread are included, the steel needle makes by screw thread process
This chirp Threaded steel needle is put between heat-shrink tube and tempreature bulb by chirp screw thread out using automatic needle inserting machine and automatic pipe reducing machine,
Both ends are shunk in advance, complete encapsulation, and then optical fiber is put into inside tempreature bulb, are heated using heat-shrink tube baking oven to heat-shrink tube, to lead
The pyrogenicity draw suppresses chirp Threaded steel needle, and chirp Threaded steel needle forms pressing result to optical fiber, generates chirp long period optical fiber light
Grid.
Further, the pyrocondensation pipe outside diameter is determined according to steel needle diameter and fibre diameter, and increasing temperature, it can be retracted to phase
Answer size.
Further, Precision Machining center involved in the production of the chirped periodic Threaded steel needle is the numerical control with tool magazine
Milling machine, the cutter that thread making is used are screw cutter；Its flight pitch and chirp breadth coefficient customize according to demand.
Further, the steel needle material includes but is not limited to stainless acid resistant steel.
The production method the following steps are included:
Step 1: making chirped periodic screw thread on steel needle using Precision Machining center；
Step 2: two symmetrical steel needles are inserted between heat-shrink tube and tempreature bulb simultaneously using automatic needle inserting machine；It is automatic to insert
Needle chance automatic cutting pipe, the preliminary fixation for completing steel needle；
Step 3: shrinking at heat-shrink tube both ends in advance using machine for shrinking, the encapsulation of steel needle, heat-shrink tube and tempreature bulb is completed.
Step 4: the optical fiber for peelling off coat is inserted into heat-shrink tube, heated using baking oven；Finally, optical fiber by
To the stress from Threaded steel needle, this section of optical fiber forms machinery chirp long period optic fiber grating (MCLPFG).
Technical concept of the invention are as follows: chirped periodic screw thread is processed on steel needle by Precision Machining center, and by two
The steel needle of a identical chirps period screw thread is inserted into heat-shrink tube, carries out heat shrink using heat-shrink tube profession baking oven, to realize one
Kind is stable and reliable for performance, can be detached from the machinery chirp long period optic fiber grating of complicated applied force device exclusive use.
Beneficial effects of the present invention are mainly manifested in: 1) the manufacture craft route is simple, and process flow is mature, at low cost
It is honest and clean；2) technology makes chirp long period optic fiber grating have answering for stable filter effect, performance stabilization, and heat-shrink tube
Reduce the spoilage of fiber grating with the steel needle with insertion；3) by selecting between the heat-shrink tube of various outer diameter and adjusting screw thread
Away from, and heat shrinkable process is controlled, it is collapsible to scheduled size, different application pressure and filter wavelength can be realized,
To generate different filter effects.
Detailed description of the invention
Fig. 1 is the flow chart for making chirp long period optic fiber grating structural approach.
Fig. 2 is chirp Threaded steel needle structural schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Figures 1 and 2, a kind of production method of machinery chirp long period optic fiber grating (MCLPFG), the machinery
Chirp long period optic fiber grating (MCLPFG) processed includes heat-shrink tube 103, tempreature bulb 104, two steel with chirped periodic screw thread
Needle 102 and an optical fiber 105, making apparatus are mainly concerned with Precision Machining center, automatic needle inserting machine, automatic pipe reducing machine and heat
Draw baking oven, the steel needle 101 produce chirp Threaded steel needle 102, chirp Threaded steel needle structure such as Fig. 2 by screw thread process
106 shown in.This chirp Threaded steel needle is put into heat-shrink tube 103 and tempreature bulb 104 using automatic needle inserting machine and automatic pipe reducing machine
Between, both ends are shunk in advance, complete encapsulation, and then optical fiber 105 is put into inside tempreature bulb, using heat-shrink tube baking oven to heat-shrink tube 103
Heating suppresses chirp Threaded steel needle 102 so as to cause heat-shrink tube 103, and chirp Threaded steel needle 102 forms compacting effect to optical fiber 105
Fruit generates chirp long period optic fiber grating (MCLPFG) using the elasto-optical effect of optical fiber.
Further, 103 outer diameter of heat-shrink tube is determined according to 101 diameter of steel needle and fibre diameter, heat shrinkable process
With controllability, it is collapsible to scheduled size, generates different size of power.
Further, Precision Machining center involved in the production of the chirped periodic Threaded steel needle 102 is with tool magazine
CNC milling machine, the cutter that thread making is used are screw cutter；Its flight pitch and chirp breadth coefficient customize according to demand.
Further, 101 material of steel needle includes but is not limited to stainless acid resistant steel.
The production method the following steps are included:
Step 1: the chirped periodic screw thread 106 on production steel needle 101, need to process screw thread, cutter using Precision Machining center
Screw cutter may be selected.
Step 2: two steel needles 102 with chirp screw thread are inserted into 103 the inside of heat-shrink tube using pin machine.It utilizes
Automatic needle inserting machine is inserted into two symmetrical chirp Threaded steel needles 102 between heat-shrink tube 103 and tempreature bulb 104 simultaneously；Automatic needle inserting
Chance automatic cutting pipe, the preliminary fixation for completing steel needle.
Step 3: shrinking at 103 both ends of heat-shrink tube in advance using machine for shrinking, the encapsulation of steel needle, heat-shrink tube and tempreature bulb is completed.
Step 4: the optical fiber 105 for peelling off coat is inserted into heat-shrink tube 103, the dedicated baking oven of heat-shrink tube is then utilized
Heat-shrink tube 103 is heated；For final optical fiber 105 by the stress from Threaded steel needle 102, it is long that this section of optical fiber forms chirp
Period optical fiber grating (MCLPFG).
Precision Machining center involved in the production of the chirped periodic Threaded steel needle 102 is the CNC milling machine with tool magazine,
The cutter that the production of screw thread is used is screw cutter.The flight pitch and chirp breadth coefficient of external screw thread 106 make on demand, steel
The material of needle 101 includes but is not limited to stainless acid resistant steel.
Claims (5)
1. a kind of production method of machinery chirp long period optic fiber grating, which is characterized in that the machinery chirp long period
Fiber grating includes heat-shrink tube, tempreature bulb, two steel needles and an optical fiber with chirped periodic screw thread, and the steel needle passes through spiral shell
Line processing and fabricating goes out chirp Threaded steel needle, this chirp Threaded steel needle is put into heat-shrink tube using automatic needle inserting machine and automatic pipe reducing machine
Between tempreature bulb, both ends are shunk in advance, complete encapsulation, and then optical fiber is put into inside tempreature bulb, using heat-shrink tube baking oven to pyrocondensation
Pipe heating suppresses chirp Threaded steel needle so as to cause heat-shrink tube, and chirp Threaded steel needle forms pressing result to optical fiber, generates chirp
Long-period fiber grating.
2. a kind of production method of machinery chirp long period optic fiber grating as described in claim 1, which is characterized in that described
Pyrocondensation pipe outside diameter determines that increasing temperature, it can be retracted to corresponding size according to steel needle diameter and fibre diameter.
3. a kind of production method of machinery chirp long period optic fiber grating as claimed in claim 1 or 2, which is characterized in that
Precision Machining center involved in the production of the chirped periodic Threaded steel needle is the CNC milling machine with tool magazine, and thread making is used
Cutter be screw cutter；Its flight pitch and chirp breadth coefficient customize according to demand.
4. a kind of production method of machinery chirp long period optic fiber grating as claimed in claim 1 or 2, which is characterized in that
The steel needle material is stainless acid resistant steel.
5. a kind of production method of machinery chirp long period optic fiber grating as claimed in claim 1 or 2, which is characterized in that
The production method the following steps are included:
Step 1: making chirped periodic screw thread on steel needle using Precision Machining center；
Step 2: two symmetrical steel needles are inserted between heat-shrink tube and tempreature bulb simultaneously using automatic needle inserting machine；Automatic needle inserting machine
It can automatic cutting pipe, the tentatively fixation of completion steel needle；
Step 3: shrinking at heat-shrink tube both ends in advance using machine for shrinking, the encapsulation of steel needle, heat-shrink tube and tempreature bulb is completed；
Step 4: the optical fiber for peelling off coat is inserted into heat-shrink tube, heated using baking oven；Finally, optical fiber is arrived
From the stress of Threaded steel needle, this section of optical fiber forms machinery chirp long period optic fiber grating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910412591.6A CN110320590B (en) | 2019-05-17 | 2019-05-17 | Method for manufacturing mechanically chirped long-period fiber grating |
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| CN201910412591.6A CN110320590B (en) | 2019-05-17 | 2019-05-17 | Method for manufacturing mechanically chirped long-period fiber grating |
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| CN110320590B CN110320590B (en) | 2020-07-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722314A (en) * | 2020-05-27 | 2020-09-29 | 浙江工业大学 | Method for manufacturing mechanical long-period fiber grating |
| CN112068240A (en) * | 2020-09-07 | 2020-12-11 | 桂林电子科技大学 | Long-period chirped fiber grating and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN110320590B (en) | 2020-07-31 |
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