CN112099142A - Optical division ratio adjustable optical splitter device based on FBT fusion PLC and production process - Google Patents
Optical division ratio adjustable optical splitter device based on FBT fusion PLC and production process Download PDFInfo
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- CN112099142A CN112099142A CN202010996186.6A CN202010996186A CN112099142A CN 112099142 A CN112099142 A CN 112099142A CN 202010996186 A CN202010996186 A CN 202010996186A CN 112099142 A CN112099142 A CN 112099142A
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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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- 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
- G02B6/24—Coupling light guides
- G02B6/245—Removing protective coverings of light guides before coupling
-
- 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
- G02B6/24—Coupling light guides
- G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
-
- 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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
-
- 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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
- G02B6/4225—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements by a direct measurement of the degree of coupling, e.g. the amount of light power coupled to the fibre or the opto-electronic element
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4239—Adhesive bonding; Encapsulation with polymer material
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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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses an optical division ratio adjustable optical branching unit device based on FBT fusion PLC and a production process thereof, and the optical division ratio adjustable optical branching unit device based on FBT fusion PLC comprises: the optical fiber coupler comprises a micro FBT optical splitter (1), a micro PLC optical splitter (2) and a compact shell (3); a FBT fusion PLC-based optical split-ratio adjustable optical splitter production process comprises the following steps: the method comprises the steps of optical fiber installation, light source monitoring, stop point control, optical characteristic detection, detection post-processing, color marking, optical fiber array adjustment, chip adjustment, right-angle prism adjustment, UV curing, parameter testing, optical fiber cutting, fiber melting of an FBT optical splitter and a PLC optical splitter, and parameter testing. The invention has the beneficial effects that: the additional loss is low, the polarization-dependent loss is low, the signal is stabilized, and the optional splitting ratio can be realized.
Description
Technical Field
The invention relates to a compact optical splitter, in particular to an optical splitting ratio adjustable optical splitter device based on FBT fusion PLC and a production process thereof.
Background
With the depth of optical fiber communication, optical fiber access has become a hotspot in the field of optical communication at home and abroad, and an optical distribution network ODN is a key part of an optical access network and consists of an optical splitter, an optical fiber cable, an optical distribution product and the like, wherein the optical splitter is a core device in the ODN, and the optical distribution network provides a transmission channel between an optical network unit and an optical line terminal through the optical splitter. The optical splitter is an integrated waveguide optical rate splitter based on a quartz substrate, and has the characteristics of small volume, wide working wavelength range, high reliability, good splitting uniformity and the like. However, the existing optical splitters are packaged in single bodies, each single body can only perform one group of optical path splitting output, when a customer needs to split multiple paths of light, multiple products are needed to be used together, and the optical splitters are troublesome to operate and not high in stability.
Disclosure of Invention
The invention aims to solve the problems and provides a light splitting ratio adjustable light splitter device based on FBT fusion PLC and a production process thereof.
A production process of an optical division adjustable optical splitter based on FBT fusion PLC comprises the following steps:
s1: selecting two optical fibers to be placed in the optical splitter device;
s2: tapering the optical fiber, and carrying out index test on the optical fiber;
s3: packaging and color marking the optical fiber;
s4: adjusting the optical fiber array, the chip, the single fiber, the right-angle prism and the strip fiber FA;
s5: UV curing;
s6: testing the shunt after high and low temperature circulation;
s7: processing the optical fiber;
s8: melting fiber by the FBT optical splitter and the PLC optical splitter;
s9: after the fusion is completed, the FBT parameters are tested, and the parameter data are recorded.
Step S1 includes the following sub-steps:
s11: aligning the steps of the coating layers on the left and the right of the optical fiber, and placing the steps at the position which does not exceed the V-shaped groove by 0.5 mm;
s12: placing the optical fibers in parallel to enable the optical fibers to be aligned and close;
s13: the main optical fiber is arranged in the inner groove and is connected into a cone drawing machine monitoring channel 1, and the auxiliary optical fiber is connected into a cone drawing machine monitoring channel 2.
Step S2 includes the following substeps:
s21: tapering the optical fiber and monitoring whether the additional loss is at a normal value;
s22: taking a main optical fiber with a certain length, and winding into 3 coils with the diameter of 6 cm;
s22: and rotating the wound coil to check the optical fiber index value displayed on the computer screen.
Step S3 includes the following substeps:
s31: detecting whether the optical fiber meets the packaging specification;
s32: packaging and color marking the optical fiber which meets the standard;
s33: and processing the optical fiber which does not meet the standard.
Step S33 further includes the following sub-steps:
s331: if the EL or PDL value is too large and exceeds the specification, the optical fiber is redrawn;
s332: if the CR is small due to the early fire stopping for the first time, the ignition or the ignition is pulled to a qualified value;
s333: if the CR is larger due to the fact that the fire is stopped too late for the first time, the steel wire is scrapped and redrawn.
Step S4 includes the following sub-steps:
s41: placing the cleaned optical fiber array, the chip and the single core on a coupling adjusting frame;
s42: adjusting the 8-degree surface of the optical fiber array to be parallel to the 8-degree surface of the chip output, wherein the distance between the optical fiber array and the chip is 100 +/-25 mu m;
s43: placing the right-angle prism on a clamping seat of the output optical fiber array to keep parallel;
s44: clamping the first channel and the last channel of the optical fiber FA into a bare fiber adapter, and placing an optical power meter probe into the cut end face;
s45: and adjusting the angle between the output FA and the chip.
Preferably, the fiber stripping length in step S44 is less than 5 cm;
s5 includes the following substeps:
s51: wiping the dispensing rod clean by using clean dust-free paper, pulling apart 15-20 grids in the left and right z directions, and uniformly dripping glue with the diameter of about 1mm along the front side of the gap direction;
s52: after the contact surface is filled with the glue, the chip and FA which are withdrawn from the contact surface are coupled closely again, and whether bubbles are generated in the glue during coupling is observed; if bubbles exist, the glue is unqualified, and the glue is dispensed again; if qualified, go to step S103;
s53: after coupling to the optimal parameters, curing with a UV point source, typically 1.5 minutes, for a sample of 2.5 minutes;
s54: and when the display value of the optical power meter reaches the optimal value state, the UV light guide pipe is aligned to the glue at the contact position of the FA and the chip for exposure and irradiation.
Preferably, the test parameters in step S6 include: working wavelength, maximum insertion loss, fixed working wavelength, full working bandwidth, return loss, directivity.
The step S7 includes the following sub-steps:
s71: opening a power supply of the welding machine, stripping an optical fiber coating layer and wiping the optical fiber coating layer;
s72: cutting the optical fiber;
s73: placing the optical fiber on the V-shaped groove, and enabling the tip end of the optical fiber to be located between the tip end of the electrode and the edge of the V-shaped groove;
s74: closing the pressing plate, pressing the optical fiber, and placing the optical fiber at the bottommost part of the V-shaped groove;
s75: the windshield cover is closed.
Preferably, the length of the optical fiber coating layer stripped in step S71 is 30-40 mm.
Preferably, the cut length of the 0.25nm coated optical fiber in the step S72 is 8mm to 16mm, and the cut length of the 0.9nm coated optical fiber is 16 mm.
The step S8 includes the following sub-steps:
s81: opening the fusion bond, stopping the relative movement of the fusion splicer after the gaps between the end faces of the optical fibers are proper, setting an initial gap, and measuring a cutting angle by the fusion splicer;
s82: performing core or cladding alignment to reduce a fusion splicer gap;
s83: and (5) welding the left and right optical fibers, and checking whether the welding loss is qualified.
An optical split adjustable optical splitter device based on FBT fuses PLC, its characterized in that includes: miniature FBT optical splitter (1), miniature PLC optical splitter (2) and compact shell (3), wherein:
the miniature FBT optical splitter (1) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, and the output empty pipe is a 0.9 blue empty pipe and a 0.9 red empty pipe;
the miniature PLC optical splitter (2) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, the output empty pipe is a 0.9 color pipe, and the color of the color pipe is sequentially from top to bottom: black, red, white, gray, brown, green, orange, blue;
the compact case comprises a bottom case and an upper cover, and the outer dimension of the case is 100 multiplied by 45 multiplied by 10 nm.
The invention has the beneficial effects that: compared with the existing splitter with a single light splitting ratio, the optical splitter can be used for various light splitting ratios and has the advantages of low additional loss, low polarization-dependent loss and strong stability.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
FIG. 2 is a process flow of the present invention;
FIG. 3 is a view of the installation of an optical fiber according to the present invention;
fig. 4 is a channel power control curve of the present invention.
In the figure: (1) -a miniature FBT optical splitter, (2) -a miniature PLC optical splitter, (3) -a compact housing; (4) -light source 1310, (5) -light source 1550, (6) -optical switch, (7) -optical fiber axis, (8) -V-groove, (9) -parallel fiber, (10) -tapering channel 1, (11) -tapering channel 2.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, an optical splitting ratio adjustable optical splitter apparatus based on FBT fusion PLC includes: miniature FBT optical splitter (1), miniature PLC optical splitter (2) and compact shell (3), wherein:
the miniature FBT optical splitter (1) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, and the output empty pipe is a 0.9 blue empty pipe and a 0.9 red empty pipe;
the miniature PLC optical splitter (2) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, the output empty pipe is a 0.9 color pipe, and the color of the color pipe is sequentially from top to bottom: black, red, white, gray, brown, green, orange, blue;
the compact case comprises a bottom case and an upper cover, and the outer dimension of the case is 100 multiplied by 45 multiplied by 10 nm.
As shown in fig. 2, a production process of an optical split tunable optical splitter based on FBT fusion PLC includes the following steps:
s1: selecting two optical fibers to be placed in the optical splitter device;
s2: tapering the optical fiber, and carrying out index test on the optical fiber;
s3: packaging and color marking the optical fiber;
s4: adjusting the optical fiber array, the chip, the single fiber, the right-angle prism and the strip fiber FA;
s5: UV curing;
s6: testing the shunt after high and low temperature circulation;
s7: processing the optical fiber;
s8: melting fiber by the FBT optical splitter and the PLC optical splitter;
s9: after the fusion is completed, the FBT parameters are tested, and the parameter data are recorded.
Step S1 includes the following sub-steps:
s11: aligning the steps of the coating layers on the left and the right of the optical fiber, and placing the steps at the position which does not exceed the V-shaped groove by 0.5 mm;
s12: placing the optical fibers in parallel to enable the optical fibers to be aligned and close;
s13: the main optical fiber is arranged in the inner groove and is connected into a cone drawing machine monitoring channel 1, and the auxiliary optical fiber is connected into a cone drawing machine monitoring channel 2.
Step S2 includes the following substeps:
s21: tapering the optical fiber and monitoring whether the additional loss is at a normal value;
s22: taking a main optical fiber with a certain length, and winding into 3 coils with the diameter of 6 cm;
s22: and rotating the wound coil to check the optical fiber index value displayed on the computer screen.
It is understood that the additional loss is greater than 0.3dB or the tapering time is not coupled beyond the normal time 120s, and the tapering is performed again.
It should be noted that the 1550 wavelength is monitored by a 1550nm light source, the 1310 wavelength is monitored by a 1310nm light source, and the special wavelength is monitored by a special light source; in the tapering process, when a channel power curve is observed, the initial stage of the main channel power control line is controlled to be as straight as possible, and finally the main channel power control line is reduced to the expected power, and the auxiliary channel power control line is increased to the expected power.
Step S3 includes the following substeps:
s31: detecting whether the optical fiber meets the packaging specification;
s32: packaging and color marking the optical fiber which meets the standard;
s33: and processing the optical fiber which does not meet the standard.
It should be noted that, the color is marked according to the color designated by the customer, generally, the input end is colored with white 0.9 empty tube, the output end is colored with blue 0.9 empty tube for small light ratio, and is colored with black 0.9 empty tube for large light ratio.
Step S33 further includes the following sub-steps:
s331: if the EL or PDL value is too large and exceeds the specification, the optical fiber is redrawn;
s332: if the CR is small due to the early fire stopping for the first time, the ignition or the ignition is pulled to a qualified value;
s333: if the CR is larger due to the fact that the fire is stopped too late for the first time, the steel wire is scrapped and redrawn.
Step S4 includes the following sub-steps:
s41: placing the cleaned optical fiber array, the chip and the single core on a coupling adjusting frame;
s42: adjusting the 8-degree surface of the optical fiber array to be parallel to the 8-degree surface of the chip output, wherein the distance between the optical fiber array and the chip is 100 +/-25 mu m;
s43: placing the right-angle prism on a clamping seat of the output optical fiber array to keep parallel;
s44: clamping the first channel and the last channel of the optical fiber FA into a bare fiber adapter, and placing an optical power meter probe into the cut end face;
s45: and adjusting the angle between the output FA and the chip.
It is to be understood that the fiber stripping length in step S44 is less than 5 cm;
it should be understood that, in the process of adjusting the 8-degree surface of the optical fiber array to be parallel to the output 8-degree surface, the input end needs to be rotated for translation Z coarse adjustment to judge the parallelism of the two 8-degree surfaces, the adjustment amplitude is controlled during adjustment to avoid collision between the input optical fiber array and the chip, and the distance between the input optical fiber array and the chip is adjusted to be 100 +/-25 μm.
It should be understood that the right angle prism is adjusted in the following manner: and (3) the microscope multiple is put to be minimum until an image of the chip output end reflected by the right-angle prism is seen, the input end is adjusted along the Y direction until an expected bright spot appears, then the adjustment of the input end is matched to coarsely adjust the knob X, so that the bright spot is brightest, and a row of bright spots are confirmed to be continuous and have basically consistent brightness.
It should be noted that the output FA chip and angle adjustment method is the same as the input FA chip and angle adjustment method; aligning a laser fixed on an adjusting frame to a coupling surface to perform reflected red light collimation, adjusting the distance between an output optical fiber array and a chip to be 100 +/-25 mu m when red light reflected to the top of the table is at one point, adjusting the translation X and Y coarse adjustment of an output end to ensure that the display value of a power meter is less than or equal to 30db, adjusting the translation X and Y coarse adjustment of an output end to ensure that the display value of the power meter is less than or equal to 30db, respectively drawing the distances between the input end FA and the chip and keeping the distance between the two ends to be 1-3 mu m respectively to adjust the X and Y translation fine adjustment keys to be in an optimal state.
S5 includes the following substeps:
s51: wiping the dispensing rod clean by using clean dust-free paper, pulling apart 15-20 grids in the left and right z directions, and uniformly dripping glue with the diameter of about 1mm along the front side of the gap direction;
s52: after the contact surface is filled with the glue, the chip and FA which are withdrawn from the contact surface are coupled closely again, and whether bubbles are generated in the glue during coupling is observed; if bubbles exist, the glue is unqualified, and the glue is dispensed again; if qualified, go to step S103;
s53: after coupling to the optimal parameters, curing with a UV point source, typically 1.5 minutes, for a sample of 2.5 minutes;
s54: and when the display value of the optical power meter reaches the optimal value state, the UV light guide pipe is aligned to the glue at the contact position of the FA and the chip for exposure and irradiation.
In the irradiation process, when parameters change, the UV light source needs to be turned off and then fine-tuned, and the UV energy standard is 100-150 mW/cm 2.
It should be understood that the test parameters in step S6 include: working wavelength, maximum insertion loss, fixed working wavelength, full working bandwidth, return loss, directivity.
The step S7 includes the following sub-steps:
s71: opening a power supply of the welding machine, stripping an optical fiber coating layer and wiping the optical fiber coating layer;
s72: cutting the optical fiber;
s73: placing the optical fiber on the V-shaped groove, and enabling the tip end of the optical fiber to be located between the tip end of the electrode and the edge of the V-shaped groove;
s74: closing the pressing plate, pressing the optical fiber, and placing the optical fiber at the bottommost part of the V-shaped groove;
s75: the windshield cover is closed.
It is to be understood that the length of the optical fiber coating layer stripped in step S71 is 30-40 mm.
It is to be understood that the cut length of the 0.25nm outer coated optical fiber in the step S72 is 8mm to 16mm, and the cut length of the 0.9nm outer coated optical fiber is 16 mm.
The optical fiber cutting method includes: open the sword lid, push away the rear with the blade sliding seat, place the prepared optic fibre on the cutting knife to verify correct cutting length, slowly push down the hammering block arm, forward push away the sliding seat gently, when the blade will cross optic fibre, the hammering block arm is pressed down rapidly, and optic fibre is broken.
The step S8 includes the following sub-steps:
s81: opening the fusion bond, stopping the relative movement of the fusion splicer after the gaps between the end faces of the optical fibers are proper, setting an initial gap, and measuring a cutting angle by the fusion splicer;
s82: performing core or cladding alignment to reduce a fusion splicer gap;
s83: and (5) welding the left and right optical fibers, and checking whether the welding loss is qualified.
It should be noted that, after the fusion key is pressed, the optical fibers move towards each other, and during the movement, a short discharge is generated to clean the surface of the optical fibers.
It will be appreciated that the arc generated by the high voltage discharge melts the left fiber into the right fiber, and finally the microprocessor calculates the loss and displays the value on the display.
FIG. 3 is a drawing of an installation of optical fibers of the present invention.
Fig. 4 is a channel power control curve of the present invention.
In order to further understand the parameter variation of the optical splitting ratio adjustable optical splitter device based on the FBT fusion PLC and the production process, referring to table 1, table 1 is a conventional parameter of the optical fiber of the present invention.
Table 1, conventional parameters for the optical fiber of the present invention.
In order to further understand the parameter variation of the optical splitting ratio adjustable optical splitter device based on the FBT fusion PLC and the production process, refer to table 2, where table 2 is the FBT parameter of the present invention.
Table 2 FBT parameters of the invention.
Claims (14)
1. A production process of an optical division adjustable optical splitter based on FBT fusion PLC is characterized by comprising the following steps:
s1: selecting two optical fibers to be placed in the optical splitter device;
s2: tapering the optical fiber, and carrying out index test on the optical fiber;
s3: packaging and color marking the optical fiber;
s4: adjusting the optical fiber array, the chip, the single fiber, the right-angle prism and the strip fiber FA;
s5: UV curing;
s6: testing the shunt after high and low temperature circulation;
s7: processing the optical fiber;
s8: melting fiber by the FBT optical splitter and the PLC optical splitter;
s9: after the fusion is completed, the FBT parameters are tested, and the parameter data are recorded.
2. The process of claim 1, wherein the step S1 includes the following sub-steps:
s11: aligning the steps of the coating layers on the left and the right of the optical fiber, and placing the steps at the position which does not exceed the V-shaped groove by 0.5 mm;
s12: placing the optical fibers in parallel to enable the optical fibers to be aligned and close;
s13: the main optical fiber is arranged in the inner groove and is connected into a cone drawing machine monitoring channel 1, and the auxiliary optical fiber is connected into a cone drawing machine monitoring channel 2.
3. The process of claim 1, wherein the step S2 includes the following sub-steps:
s21: tapering the optical fiber and monitoring whether the additional loss is at a normal value;
s22: taking a main optical fiber with a certain length, and winding into 3 coils with the diameter of 6 cm;
s22: and rotating the wound coil to check the optical fiber index value displayed on the computer screen.
4. The process of claim 3, wherein the additional loss is greater than 0.3dB or the tapering time exceeds the normal time by 120s without coupling, and the tapering needs to be performed again.
5. The process of claim 1, wherein the step S3 includes the following sub-steps:
s31: detecting whether the optical fiber meets the packaging specification;
s32: packaging and color marking the optical fiber which meets the standard;
s33: and processing the optical fiber which does not meet the standard.
6. The process of claim 5, wherein the step S33 further includes the following sub-steps:
s331: if the EL or PDL value is too large and exceeds the specification, the optical fiber is redrawn;
s332: if the CR is small due to the early fire stopping for the first time, the ignition or the ignition is pulled to a qualified value;
s333: if the CR is larger due to the fact that the fire is stopped too late for the first time, the steel wire is scrapped and redrawn.
7. The process of claim 1, wherein the step S4 includes the following sub-steps:
s41: placing the cleaned optical fiber array, the chip and the single core on a coupling adjusting frame;
s42: adjusting the 8-degree surface of the optical fiber array to be parallel to the 8-degree surface of the chip output, wherein the distance between the optical fiber array and the chip is 100 +/-25 mu m;
s43: placing the right-angle prism on a clamping seat of the output optical fiber array to keep parallel;
s44: clamping the first channel and the last channel of the optical fiber FA into a bare fiber adapter, and placing an optical power meter probe into the cut end face;
s45: and adjusting the angle between the output FA and the chip.
8. The process of claim 7, wherein the fiber stripping length in step S44 is less than 5 cm.
9. The process of claim 1, wherein the S5 comprises the following sub-steps:
s51: wiping the dispensing rod clean by using clean dust-free paper, pulling apart 15-20 grids in the left and right z directions, and uniformly dripping glue with the diameter of about 1mm along the front side of the gap direction;
s52: after the contact surface is filled with the glue, the chip and FA which are withdrawn from the contact surface are coupled closely again, and whether bubbles are generated in the glue during coupling is observed; if bubbles exist, the glue is unqualified, and the glue is dispensed again; if qualified, go to step S103;
s53: after coupling to the optimal parameters, curing with a UV point source, typically 1.5 minutes, for a sample of 2.5 minutes;
s54: and when the display value of the optical power meter reaches the optimal value state, the UV light guide pipe is aligned with the glue at the contact position of the FA and the chip for exposure and irradiation.
10. The process of claim 1, wherein the test parameters in step S6 include: working wavelength, maximum insertion loss, fixed working wavelength, full working bandwidth, return loss, directivity.
11. The process of claim 1, wherein the step S7 includes the following sub-steps:
s71: opening a power supply of the welding machine, stripping an optical fiber coating layer and wiping the optical fiber coating layer;
s72: cutting the optical fiber;
s73: placing the optical fiber on the V-shaped groove, and enabling the tip end of the optical fiber to be located between the tip end of the electrode and the edge of the V-shaped groove;
s74: closing the pressing plate, pressing the optical fiber, and placing the optical fiber at the bottommost part of the V-shaped groove;
s75: the windshield cover is closed.
12. The process of claim 10, wherein the stripped coating layer of the optical fiber has a length of 30-40mm in step S71, the cut length of the 0.25nm outer coated optical fiber has a length of 8-16 mm in step S72, and the cut length of the 0.9nm outer coated optical fiber has a length of 16 mm.
13. The process of claim 1, wherein the step S8 includes the following sub-steps:
s81: opening the fusion bond, stopping the relative movement of the fusion splicer after the gaps between the end faces of the optical fibers are proper, setting an initial gap, and measuring a cutting angle by the fusion splicer;
s82: performing core or cladding alignment to reduce a fusion splicer gap;
s83: and (5) welding the left and right optical fibers, and checking whether the welding loss is qualified.
14. An optical split adjustable optical splitter apparatus based on FBT fusion PLC made by using claims 1-13, comprising: miniature FBT optical splitter (1), miniature PLC optical splitter (2) and compact shell (3), wherein:
the miniature FBT optical splitter (1) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, and the output empty pipe is a 0.9 blue empty pipe and a 0.9 red empty pipe;
the miniature PLC optical splitter (2) comprises an input empty pipe and an output empty pipe, wherein the input empty pipe is a 0.9 white empty pipe, the output empty pipe is a 0.9 color pipe, and the color of the color pipe is sequentially from top to bottom: black, red, white, gray, brown, green, orange, blue;
the compact case comprises a bottom case and an upper cover, and the outer dimension of the case is 100 multiplied by 45 multiplied by 10 nm.
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