VS Receptacle - iNEMIthor.inemi.org/webdownload/newsroom/Presentations/... · Convergent beam SMF Aperture Defocused Convergent beam Sensitive to axial miss alignment Not sensitive

VS Receptaclenew glass type anti-reflection receptacle

TOTO LTD.MAR-26-2007

Contents1 ． Introduction of VS-receptacle

Optical PerformanceReliability Test Result

2 ．Effect on optical performance , of end face conditionDurability over plug mating cycleEffect of contamination (on PC end face)Effect of contamination (on Polishing end face)

Copyright © 2004 TOTO LTD. All Rights Reserved.

Introduction of VS-receptacle


3Copyright © 2004 TOTO LTD. All Rights Reserved.

Structure and featureMetal shell

Transparent glass bodyRigid sleeve

Vitro Stub

Miniaturization of module is achievable because no wave-guide structure exists inside the receptacle and light path length from plug tip to LD is short.

Fresnel reflection at the connection is minimized because transparent glass body, with its refractive index as precisely consistent as SM fiber core, closely contacts with plug at convex sphere.


Photo transmission schematic

SMFAperture

SMFMode field

SMF Aperture

Photo transmission

Conventional fiber stub type Vitro Stub type

Convergentbeam

SMFAperture

DefocusedConvergentbeam

Sensitive to axial miss alignment

Not sensitive to axial miss alignment

Insertion loss variation is minimized at plug in/out and wiggling because there are no SMF to SMF connections in the receptacle.


Property of glass parts

Well fit to reduce Fresnel Reflection

Parameter UnitGlass

CeramicsTube

TransparentGlass Body Silica Glass

Refractiveindex@λ 1310nm

- - 1.45923(±0.00005)

1.452(SMF core)

Refractiveindex@λ 1550nm

- - 1.45626(±0.00005)

1.449(SMF core)

ThermalExpansionCoefficient

ppm/K 2.7 3.2 0.54

Well fit to reduce thermal stress in Re-heat process

Sleeve and transparent glass body are made of chemically stabilized materials and they does not include lead.


Re-heat forming of VitroStub

Glass ceramics sleeve(Softening temp >1000℃) Automatically formed

R20 convex

Transparent glass rod(Softening temp <1000℃)

Heating in electric furnace


Evaluation of convex geometryInterferometer diagram

View direction

Easy to view a contact conditionFiber cladding region

Physical contact region


TransmittanceMeasurement facility and sample schematic

DC power supply

Power meter

LC Adapter HousingXYZθ

Aligned

Fiber:SMF-28

LD:1310nmF-P

Lens:Ballφ2mmBK7

Virtual TOSA on optical bench

Vitro Stub model

Reinforced Fiber Stub model

Mode filtering

SAMPLE

LC Plug

LDReceptacle


Transmittance

0

100

200

300

400

500

600

Fiber Stub6deg

Vitro Stub4deg

Vitro Stub6deg

Vitro Stub8deg

Vitro Stub15deg

Cou

plin

g Po

wer

[µW

Test Results

Angle of the slanted end face


Return LossMeasurement facilities schematic

Back Reflection Meter

Vitro stub model

8deg angled

SAMPLE

Fiber:SMF-28

Using JDS-Ｕ RM3750B Buck Reflection Meter


Return Loss

0

2

4

6

8

10

45 46 47 48 49 50 51 52 53 54 55

Return loss (dB)

Freq

.

@1310nm@1550nm

Test Results


Coupling repeatabilityMeasurement facilities schematic

DC power supply

Power meter

FixtureXYZθ

Aligned

Fiber:SMF-28

LD:1310nmF-P

Lens:Ballφ2mmBK7

Connect and disconnect

Virtual TOSA on optical benchVitro stub model

8deg angled

Mode filtering

SAMPLE


Coupling repeatability

-5.00

-4.50-4.00

-3.50

-3.00-2.50

-2.00

0 5 10 15 20Plug mating cy cle

Cou

plin

g po

wer

[dB

m]

Test Results


Wiggle resistance (by practical method)Measurement facility and sample schematic

DC power supply

Power meter

XYZθAligned

True TOSA

Mode filtering Rigidly welded

3N/5N Loading

Fixture

Vitro Stub model

Conventional Fiber Stub model

SAMPLE



Wiggle resistance (by practical method)Test Results

-16.0

-12.0

-8.0

-4.0

0.0

4.0

0N 3N 5NWiggle Load

Cou

pled

Pow

er S

hift

[dB

] Vitro Stub model

Conventioal Fiber Stub

Reinfoced Fiber Stub model


Reliability Test

Based on ‘Telcordia GR-468ｰCORE’

Damp Heat Test 85℃,85%RH,2000hrsTemp. Cycle Test -40℃/+105℃,1000cycleHigh Temp. Test +85℃,2000hrsLow Temp. Test -40℃,2000hrs

Mechanical Shock 5times/axis,1500G,0.5msVibration 4cycle/axis,4min/cycle,20-2000Hz,20G

All the examination is finished, and the great result is obtained!!

Evaluation Point・Optical performance・Adhesive Strength

Effect of end face condition , on optical performance



Durability over plug mating cycle Procedure･Mate/demate VS receptacle and LC connector up to 500 times.･Save the picture of VS receptacle PC end face , and measureIL/RL every 100 times.

･Use same connector through 500 times.

Mate/Demate

Camera

Save the picture

LD

Power Meter

Back Reference meter

Measure IL/RL


State of PC endface

Before mating After 500 times (A)

125μm

FS receptacle took by same magnification

After 500 times (C)After 500 times (B)


Result (Optical performance)

IL

-2-1.5

-1-0.5

00.5

11.5

2

0 100 200 300 400 500cycle.

[dB

]

RL

404244464850525456

0 100 200 300 400 500cycle.[d

B]

N=5

Change of optical performance is hardly seen!


Effect of contamination(PC end face)Procedure･Measure IL/RL at clean state.･Put dust by dirty cotton swab.･Save a picture of state and measure IL/RL.･Put other dust and measure IL/RL.･Repeat up to 5 times at every sample.

Dust Applied

Cleaning and Put dust

LD

Power Meter

Back Reference meter

Measure IL/RL

Camera

Save the picture


State of PC end face

Dust Applied (A) Dust Applied (B)

FS receptacle took by same magnification

125μm

Dust Applied (D)Dust Applied (C)



RL

404244464850525456

Initial 1 2 3 4 5times

[dB

]

IL

-2-1.5

-1-0.5

00.5

11.5

2

Initial 1 2 3 4 5times

[dB]

N=5Change of optical performance is hardly seen!


Effect of contamination (polishing end face)Procedure･Measure IL/RL at clean state.･Put dust by dirty cotton swab.･Save a picture of state and measure IL.･Put other dust and measure IL.･Repeat 10 times.

Dust Applied Cleaning and

Put dust

LD

Power MeterMeasure IL/RL

Camera

Save the picture


State of contamination1.25mm(Polishing Area)

Before Test Dust Applied (A) Dust Applied (B)

Dust Applied (C) Dust Applied (E)Dust Applied (D)



IL

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

Initial 1 2 3 4 5

[dB]

Change of optical performance is hardly seen!


Conclusion

In the VS-Receptacle, the scarring and the contamination hardly influence an optical performance.

Copyright © 2004 TOTO LTD. All Rights Reserved


Dump Heat Test (optical performance)85℃ 85%Rh No Mating condition n=15

Test Results

40.0

45.0

50.0

55.0

60.0

0

500

1,000

2,000

[hr]

Ret

urn

Loss

[dB

]0.20

0.30

0.40

0.50

0.60

0

500

1,000

2,000

[hr]

Cou

plin

g Po

wer

[mW

]


Dump Heat Test (adhesive strength) 85℃ 85%Rh Mating condition n=15

Test Results

-0.010

-0.005

0.000

0.005

0.010

0 300 1000 2000[hr]

Leng

th sh

ift [m

m]

0

10

20

30

40

50

0 1000 2000[hr]

Bre

ak S

treng

th [k

gf]

LC prug PC mating5～6N


Temperature Cycle Test (Optical performance)-40℃ to +85℃ No Mating condition n=15

Test Results

40.0

45.0

50.0

55.0

60.0

0 500 1,000[cycle]

Ret

urn

Loss

[dB

]0.20

0.30

0.40

0.50

0.60

0 500 1,000[cycle]

Cou

plin

g Po

wer

[mW

]


Temperature Cycle Test (adhesive strength)-40℃ to +85℃ Mating condition n=15

Test Results

-0.010

-0.005

0.000

0.005

0.010

0 500 1000[cycle]

Leng

th sh

ift [m

m]

0102030405060

0 500 1000[cycle]

Bre

ak st

reng

th [k

gf]

LC prug PC mating5～6N


Return Loss

0

5

10

15

20

45 46 47 48 49 50 51 52 53 54 55

Return loss (dB)

Freq

.

4deg @1310nm8deg @1310nm

Test Results (2)


Wiggle resistance(by substitute method)Measurement facility and sample schematic

DC power supply

Power meter

XYZθAligned 5N Loading

LC FerruleMode filtering

Fiber:SMF-28

LD:1310nmF-P

Lens:Ballφ2mmBK7

Virtual TOSA on optical bench

Vitro Stub model


Fixture

SAMPLE



Durability over plug mating cycleSurface condition of Glass Body around PC area

Measurement facilities schematic

Vitro stub model

Connect and Disconnect

SAMPLE

Back Reflection Meter

Camera Repeat

Using LC plug with zirconia ferrule that was installed SMF



Test Results

100 cycle

400 cycle

200 cycle

ORL 48.9dB

Initial

ORL 49.4dB500 cycle

ORL 50.0dB300 cycle

100μm

ORL 48.1dB ORL 48.0dB ORL 50.1dB



Test Results

2.00

2.50

3.00

3.50

4.00

020

040

060

080

010

00

cycle

Cou

plin

g Po

wer

[dB

m]

40.0

45.0

50.0

55.0

020

040

060

080

010

00

cycle

Ret

urn

Loss

[dB

]


-8.0

-6.0

-4.0

-2.0

0.0

2.0

No Load Load

Cou

pled

Pow

er S

hift

[dB

]Wiggle resistance(by substitute method)

Test Results

Vitro Stub model




Mechanical Integrity1) Vibration Test： MIL-STD-883 Method2007

Condition A, 20G, 20-2,000Hz min/cycle, 4cycle/axis(N=11)

2) Mechanical Shock Test： MIL-STD-883Method20025times/axis 1,500G, 0.5ms (N=11)


Mechanical IntegrityTest Results

Through Vibration Test & Mechanical Shock Test

-0.4

-0.2

0

0.2

0.4

Initial After

Cou

plin

g Po

wer

[dB

]

40

45

50

55

60

Initial After

Ret

urn

Los

s [d

B]

No crack breakage & remove, All serene!

Documents

VS Receptacle - iNEMIthor.inemi.org/webdownload/newsroom/Presentations/... · Convergent beam SMF Aperture Defocused Convergent beam Sensitive to axial miss alignment Not sensitive