CN87207006U - Device for making molten joint type single mode optical fibre coupler - Google Patents

Abstract

The utility model discloses a device for making a molten joint type single mode optical fiber coupler, relating to the making of the fiber optic element. The utility model provides a new device having the functions of making and using a certain light signal to detect. The utility model is mainly characterized in that the device has a light signal source capable of providing and being used for detecting optical properties and optical coupling states between single mode optical fibers being processed, the wavelength range of the light signal source is 0.5 mu-1.6 mu, and the light signal source has adjustable wavelength, high strength and single-color light pulse.

Description

Device for making molten joint type single mode optical fibre coupler

A kind of new device of production welding type single-mode optical-fibre coupler relates to the fibre optic member manufacturing.

The welded-connecting type single-mode optical-fibre coupler manufacturing installation only is the high-tech product that grew up in recent years.Known relative assembly all is that the single-mode fiber that naked fibre has been shelled at a pair of or several middle parts is crossed as the hinge shape, put into a specific high temperature temperature heating of its device, when treating naked fine fusion it is drawn into taper, control molten state and stretching tapering can obtain single-mode optical-fibre coupler.Yet, because the small geometrical size of single mode waveguide fiber structure is the complicacy of optically-coupled between the optical fiber in addition, make existing apparatus all have certain blindness, add thermal temperature field or change the automatic control that the expense expensive investments realizes fused biconical taper even update, this has also only improved operation repeatability, so far can not increase substantially yield rate, particularly ultralow insertion loss high-quality product yield.

The purpose of the utility model aim to provide a kind of can online in real time ground detect those just new devices of the production welding type single-mode optical-fibre coupler of the relevant light characteristic between processed single-mode fiber and optically-coupled state.

New device provided by the utility model, it is conceived substantially and has been to break through product manufacturing and product and detects the general concept of making a clear distinction between good and evil.In new device provided by the utility model, even when single-mode fiber is being processed into coupling mechanism, still can inject optical signal to its arbitrary fiber end face, detect all optical fiber breech face optical signal outputs then and change, and this variation has also reflected this instantaneous optically-coupled characteristic in the manufacturing processed just truly in real time.

New device provided by the utility model is made up of five aspects such as optical signal source, optical signal injection, hydrogen-oxygen micro flames, fused biconical taper, detection record.Optical signal source (1) (9) provides certain optical signals, that is: wavelength region 0.5 μ--and 1.6 μ wavelengthtunable high strength monochromatic ray pulses, its monochromatic value should be thought together with just processed coupling mechanism operation wavelength.This certain optical signals is gone into (2) by light beam and is injected into just at processed arbitrary single-mode fiber end face; Simultaneously, hydrogen-oxygen micro flames (7) (8) carries out the indirect type heat to optical fiber, carries out fused biconical taper by (4) and makes coupling mechanism; Detection record (5) (6) then detects and record the change in optical signal of all processed optical fiber tail ends all the time.Be of the present utility model be characterised in that device itself have one can provide be used as detection just between processed single-mode fiber light characteristic and optically-coupled state, wavelength region is 0.5 μ--optical signal source (1) (9) 1.6 μ wavelengthtunable high strength monochromatic ray pulses, that formed by parts (9) (10) (11) (12) (13) (14) (15) (16) etc.

Accompanying drawing and description of drawings:

Fig. 1 represents that arrangements of components of the present utility model always schemes

The light source of optical signal source (1), optical signal inject the hydrogen-oxygen gas path pipe (8) of (2), processed single-mode fiber (3), fused biconical taper (4), optical signal detector (5), registering instrument (6), micro flames hydrogen-oxygen steel cylinder source of the gas (7), PE or PVC, the grating monochromator (9) of optical signal source.

Fig. 2 represents that optical signal source of the present utility model and light beam go into component diagram

Optical signal source frame (10), light source power powerstat (11), light source heat radiation cover (12), emergent light condenser lens (13), accurate little (14), monochromatic ray pulse concentration lens (15), the optical modulation sheet (16) transferred of five dimensions.

Fig. 3 represents fused biconical taper of the present utility model and detection record component diagram

Available plasticine single-mode fiber chuck (17) (24) that processed single-mode fiber is fixed thereon, micro flames lamp holder (18), XY registering instrument (19), signal amplifier (20), the fused biconical taper frame (21) formed by φ 3 and φ 10 double-layer stainless steel concentric tubes, can drive the Fibre cartridge for optical connector motion and implement the high-quality vitreous silica sleeve pipe (25) that draws the optical fiber of awl to draw awl motor (22), pulley belt (23), be used as the φ 3.5 of indirect heating.

Most preferred embodiment:

The light source of optical signal source need only adopt general low-voltage, high-current high-intensity incandescent lamps bubble, can be used as light source as the projector bulb, as light source power, change the output voltage control intensity of light of (11) with TDGC2 type powerstat (11).Light is focused on by 10X optical focusing lens (13), after optical modulation being become the optical modulation sheet (16) about 100 hertz, enter WDG-30 type grating monochromator (9), emergent light after the beam split is that wavelength region is 0.5 μ--the wavelength-tunable intensity monochromatic ray pulse of 1.6 μ, its monochromatic value should be identical with the operation wavelength of processed coupling mechanism.With this monochromatic ray pulse is the certain optical signals that detects usefulness, be injected into arbitrary that folds up in the processed single-mode fiber (3) at little (14) center of the accurate accent of SD-2A type five dimensions after 10/0.25 optical lens (15) focuses on, the optical signal injection efficiency is guaranteed by meticulous adjusting (14).When optical signal is delivered to fused biconical taper (4) along (3), when promptly being coupled the processing district, to produce various variations, and outputing to GaInAs receiving tube (5) from every velamen work sheet mode fiber tail end, optical signal changes little electrical signal into and amplifies through DW-1 low frequency microvolt amplifier (20) and enter into the XY of Panasonic registering instrument (19) record.Meanwhile, promptly when optical signal was injected into (3), the processing of coupling mechanism was also carried out.Hydrogen-oxygen micro flames lamp holder (18) carries out indirect heating by quartz socket tube (25) to single-mode fiber.So that thermal field evenly and do not have oxyhydrogen flame and stain, wait to work as the softening awl motor (22) that draws that constitutes by SD02 type servosystem that promptly starts of optical fiber and make Fibre cartridge for optical connector (17) (24) drive (3) do to move, promptly draw awl along fiber length by pulley belt (23).So far, welded-connecting type single-mode optical-fibre coupler can obtain.

The utility model collects manufacturing and is detected on the new equipment of one with certain optical signals owing to providing a kind of, is worth so have in actual applications great technology, must produce positive remarkable result. Practice had confirmed already that utility model effectively optimized technological parameter, had greatly improved reliability of technology, the product yield particularly low insertion loss (≤0.5dB), (≤0.1dB) high-performance high-quality coupler yield is multiplied ultralow insertion loss; The product manufacturing cycle shortens half or more, and cost descends. In addition, the utility model also can be diverted from one use to another in making other similar fibre optics components and parts.

Claims (2)

1, a kind of new device of production welding type single-mode optical-fibre coupler, it injects (2), fused biconical taper (4), hydrogen-oxygen micro flames (7) (8) and detection record (5) (6) by optical signal source (1) (9), optical signal and is formed.It is characterized in that this device itself have can provide be used as detection just between processed single-mode fiber light characteristic and optically-coupled state, wavelength region is the optical signal source pulse of 0.5--1.6 μ wavelengthtunable high strength monochromatic ray, that be made up of parts (9) (10) (11) (12) (13) (14) (15) (16) etc.

2, by the described new device of claim 1, it is characterized in that by WDG-30 type grating monochromator building block (9).

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