CN102944916A

CN102944916A - Low-insertion-loss coupling technique

Info

Publication number: CN102944916A
Application number: CN2012104797663A
Authority: CN
Inventors: 戴志坚
Original assignee: ZHENJIANG HUAJIAN ELECTRIC CO Ltd
Current assignee: ZHENJIANG HUAJIAN ELECTRIC CO Ltd
Priority date: 2012-11-23
Filing date: 2012-11-23
Publication date: 2013-02-27

Abstract

The invention relates to a planar lightwave circuit splitter, in particular to a technique for coupling a planar lightwave circuit splitter chip and fiber array and provides a low-insertion-loss coupling technique. The low-insertion-loss coupling technique comprises an input single fiber (1), the planar lightwave circuit splitter chip (2) and an output optical fiber array (3). The low-insertion-loss coupling technique is characterized in that the input single fiber (1), the planar lightwave circuit splitter chip (2) and the output optical fiber array (3) are integrated. Difference between a chip insertion loss standard value and a finished product insertion loss value is reduced to the largest extent, phenomena of large loss and unstable performance of an automatic monitoring system caused by errors are avoided, and simultaneously production cost is reduced.

Description

A kind of coupling process method of filter with low insertion loss

Technical field

The present invention relates to a kind of plane waveguide light shunt, relate in particular to plane waveguide light shunt chip and FA to the process of optically-coupled.

Background technology

To be light signal enter from the input end of this device the major function of plane waveguide light shunt, carry out the mean allocation of luminous power by planar waveguide chip after, be transferred to the port that needs access by the luminous power of output terminal after with mean allocation.Along with Planar Lightwave Circuit Technology is widely used, the server device is with a wide range of applications plane waveguide light shunt as Fiber to the home, and for guaranteeing the good reliable of properties of product, we have proposed lower-cost coupling technique prioritization scheme.

The most ripe coupling technique is the High Precision Automatic Adjustment System that adopts import at present, realizes inputting single fiber and aims to the fiber position of output optical fibre array to planar waveguide chip, planar waveguide chip.Its principle of work is by automatic search software in the coupling process coupling cure site to be determined in the peaked search of luminous power, there are some problems in this process: at first, one cover Auto-coupling System is expensive, be about 10 times of manual coupled system, large-scale production certainly will cause cost to lack advantage; Secondly the degree of accuracy of automatic search software does not reach 100%, and the result precision that therefore draws is not high enough, can not access the optimum performance of device itself, and the product of making is owing to the impact of precision, and there is certain hidden danger in the reliability aspect.

Summary of the invention

Technical matters to be solved:

At first, a cover Auto-coupling System is expensive, is about 10 times of manual coupled system, and large-scale production certainly will cause cost to lack advantage; Secondly the degree of accuracy of automatic search software does not reach 100%, and the result precision that therefore draws is not high enough, can not access the optimum performance of device itself, and the product of making is owing to the impact of precision, and there is certain hidden danger in the reliability aspect.

Technical scheme:

To input the six-dimensional adjusting support left side anchor clamps of packing into after single fiber and the test tail optical fiber welding, and with the planar waveguide chip intermediate holder of packing into, be put into microscopically and clean respectively input single fiber and slab guide chip end face with cotton swab.

Clean input single fiber and planar waveguide chip are loaded onto six-dimensional adjusting support together with anchor clamps, find input single fiber and planar waveguide chip two sidelines after, first with X-axis leveling row, again with two line leveling row on the Y-axis.

Connect red light source, infrared lamp is aimed at Coupling point, by regulating 2 coincidences, then three angle mirrors are placed on the adjustment rack of right side, turn round and find out light spot by regulating X, Y-axis coarse adjustment.

With the output optical fibre array right side anchor clamps of packing into, find planar waveguide chip and output optical fibre array sideline (by handing over apart from turn-knob and reflective mirror adjusting), with both leveling row.

With the Coupling point of infrared lamp alignment surface waveguide chip and output optical fibre array, transfer coincidence with 2.

The two ends coupling surface is backed out respectively the 2-3 millimeter, then transfer first right side X, Y-axis coarse adjustment turn-knob, rear accent left side coarse adjustment turn-knob progressively pushes away output optical fibre array and input single fiber closely to planar waveguide chip by first right back left order respectively after transferring to index about 20dB.When index transfers to 10dB when following, bring into use the fine setting turn-knob, progressively push away nearly general minute three times, whenever push away closely once and regulate once afterwards, until index is transferred to about standard figures.

Planar waveguide chip both sides input single fiber and output optical fibre array are respectively stepped back 1 millimeter, and starting point UV glue is finished subsequent operation, after cured again until finish encapsulation.

Beneficial effect:

Avoided automatic monitored control system because the loss that error causes is bigger than normal, the phenomenons such as unstable properties reduce production costs simultaneously.

Description of drawings

Fig. 1 represents product structure schematic diagram of the present invention;

Embodiment

The present invention is described in detail below in conjunction with accompanying drawing.

The coupling process method of a kind of filter with low insertion loss of the present invention, the six-dimensional adjusting support input end anchor clamps of packing into after the tail optical fiber welding with input single fiber 1 and access light source, with planar waveguide chip 2 chip fixture of packing into, with output optical fibre array 3 pack into behind the output terminal anchor clamps optical fiber connector accessed the binary channels power meter after, begin to clean respectively separately end face.

Embodiment 1:

As shown in Figure 1:

Clean input single fiber 1 and planar waveguide chip 2 are loaded onto six-dimensional adjusting support successively together with anchor clamps, find input single fiber 1 and 2 liang of sidelines of planar waveguide chip by microscopic observation system after, first with X-axis leveling row, again with two sideline leveling row on the Y-axis.

Open light source, infrared lamp is aimed at input single fiber 1 and planar waveguide chip 2 end faces, hereinafter to be referred as Coupling point, by regulating turn-knob two luminous points that both ends of the surface reflect are transferred coincidence, then minute surface is placed in the chip output position on the adjustment rack of right side, the respective channel hot spot that observation chip output passage reflects is turned round and is found out light spot by regulating X, Y-axis coarse adjustment.

With the output optical fibre array 3 six-dimensional adjusting support output terminal anchor clamps of packing into, this step is identical with 1 debugging of input single fiber, and namely repeating step 2.

Behind output terminal fiber array 3 and the planar waveguide chip 2 leveling row, the two ends coupling surface is backed out respectively several millimeters, then transfer first output terminal coarse adjustment turn-knob, rear accent input end coarse adjustment turn-knob progressively pushes away output optical fibre array 3 and input single fiber 1 closely to planar waveguide chip 2 by input end order behind the first output terminal respectively when index is transferred to the 2-3 times of left and right sides of chip nominal value.When index transfers to less than the chip nominal value below 2 times, bring into use the fine setting turn-knob, progressively push away nearly general minute three times or several, whenever push away closely once and regulate once afterwards, until index is transferred to about nominal value.

Planar waveguide chip 2 both sides input single fiber 1 and output optical fibre array 3 are respectively stepped back 1 millimeter, and starting point UV glue is finished subsequent operation, again until finish encapsulation after it solidifies.

Claims

1. the coupling process method of a filter with low insertion loss, comprise input single fiber (1), planar waveguide chip (2), output optical fibre array (3), it is characterized in that: input single fiber (1), planar waveguide chip (2), output optical fibre array (3), tail optical fiber, six-dimensional adjusting support input end anchor clamps, chip fixture, output terminal anchor clamps, the binary channels power meter of subsidiary access light source are as a whole.

2. the coupling process method of a kind of filter with low insertion loss as claimed in claim 1, it is characterized in that: the six-dimensional adjusting support input end anchor clamps of packing into after the tail optical fiber welding of described input single fiber 1 and access light source, with planar waveguide chip 2 chip fixture of packing into, with output optical fibre array 3 pack into behind the output terminal anchor clamps optical fiber connector accessed the binary channels power meter after, begin to clean respectively separately end face.

3. the coupling process method of a kind of filter with low insertion loss as claimed in claim 2, it is characterized in that: clean input single fiber 1 and planar waveguide chip 2 are loaded onto six-dimensional adjusting support successively together with anchor clamps, after finding input single fiber 1 and 2 liang of sidelines of planar waveguide chip by microscopic observation system, first with X-axis leveling row, again with two sideline leveling row on the Y-axis.

4. such as the coupling process method of the described a kind of filter with low insertion loss of the arbitrary claim of claim 1-3, it is characterized in that: open light source, infrared lamp is aimed at input single fiber 1 and planar waveguide chip 2 end faces, hereinafter to be referred as Coupling point, by regulating turn-knob two luminous points that both ends of the surface reflect are transferred coincidence, then minute surface is placed in the chip output position on the adjustment rack of right side, and the respective channel hot spot that observation chip output passage reflects is turned round and found out light spot by regulating X, Y-axis coarse adjustment.

5. such as the coupling process method of the described a kind of filter with low insertion loss of the arbitrary claim of claim 1-3, it is characterized in that: with the output optical fibre array 3 six-dimensional adjusting support output terminal anchor clamps of packing into, this step is identical with 1 debugging of input single fiber, and namely repeating step 2.

6. such as the coupling process method of the described a kind of filter with low insertion loss of the arbitrary claim of claim 1-3, it is characterized in that: behind output terminal fiber array 3 and the planar waveguide chip 2 leveling row, the two ends coupling surface is backed out respectively several millimeters, then transfer first output terminal coarse adjustment turn-knob, rear accent input end coarse adjustment turn-knob progressively pushes away output optical fibre array 3 and input single fiber 1 closely to planar waveguide chip 2 by input end order behind the first output terminal respectively when index is transferred to the 2-3 times of left and right sides of chip nominal value.

7. when index transfers to less than the chip nominal value below 2 times, bring into use the fine setting turn-knob, progressively push away nearly general minute three times or several, whenever push away closely once and regulate once afterwards, until index is transferred to about nominal value.

8. such as the coupling process method of the described a kind of filter with low insertion loss of the arbitrary claim of claim 1-6, it is characterized in that planar waveguide chip 2 both sides input single fiber 1 and output optical fibre array 3 are respectively stepped back 1 millimeter, starting point UV glue is finished subsequent operation, again until finish encapsulation after it solidifies.