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Comparison of Cleaning Methods on AR Coated Expanded Beam Connector

Tiger Ninomiya (Takuya.Ninomiya@senko.com)

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Background

• This is a follow up from last year’s meeting whereby SENKO presented results from various cleaning method on non-AR Coated expanded beam connectors

• This year we expand testing investigate the effectiveness of the various cleaning methods/materials on oil based contaminant on AR Coated expanded beam connectors

• Quantify the effectiveness of the cleaning method in terms of IL & ORL of the interconnector which will allow iNEMI to evaluate the impact/significance of the various cleaning methods against the transmitted signal’s BER/Power Penalty.

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Types of cleaners

Pen Type

Gel Pad

Wipe Dry/Wet

* Based on cleaners listed in IEC TR 62627-01 Edition 2.0 2016-01

Compressed Air

Dust is being deposited using a syringe and

sprayed on the endface manually

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Connector

Molex VersaBeam

MT connector

assembly was used

for the testing

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End Face Cleaning for Non-contact EBCCleaner Type

Lint Free + Alcohol Pen Type Compressed Gas Gel TypeAR-Coated

Initial

With dust

After cleaning

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Lint Free Wipe + Alcohol

Compressed Gas

Initial Cleaned

Initial Cleaned

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Gel Pad

Pen TypeDust

residue

Dust

residue

Initial Cleaned

Initial Cleaned

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Test Result (Lint Free + Alcohol)

before after

Ref(dBm) IL(dB) Ref(dBm) RL(dBm) Ref(dBm) IL(dB) Ref(dBm) RL(dBm)

-26.684 0.587 -56.571 -0.534 -26.684 0.274 -56.571 3.996

-26.516 0.304 -56.243 0.385 -26.516 0.445 -56.243 -0.566

-27.493 0.28 -58.47 0.887 -27.493 0.005 -58.47 13.33

-26.696 -0.012 -56.578 13.36 -26.696 0.03 -56.578 13.383

-29.488 0.048 -59.237 13.991 -29.488 0.076 -59.237 13.993

-29.268 0.044 -59.438 7.618 -29.268 0.068 -59.438 8.328

-29.848 -0.138 -59.826 13.311 -29.848 -0.109 -59.826 13.341

-29.647 -0.079 -59.343 13.928 -29.647 -0.045 -59.343 13.962

-29.054 -0.007 -59.037 12.933 -29.054 0.022 -59.037 13.045

-29.378 0.35 -47.033 14.448 -29.378 0.366 -47.033 14.387

-29.681 -0.007 -59.301 2.485 -29.681 0.03 -59.301 3.598

-29.218 0.131 -59.815 12.613 -29.218 0.138 -59.815 13.238

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13

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IL Result

Lint free+ Alcohol

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Test Result (Pen type)

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13

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IL result

Pen type cleaner

before after

Ref(dBm) IL(dB) Ref(dBm) RL(dBm) Ref(dBm) IL(dB) Ref(dBm) RL(dBm)

-26.684 0.552 -56.571 0.825 -26.684 0.426 -56.571 3.738

-26.516 0.37 -56.243 -1.126 -26.516 0.093 -56.243 3.35

-27.493 0.168 -58.47 1.429 -27.493 0.115 -58.47 3.556

-26.696 0 -56.578 6.02 -26.696 0.455 -56.578 -1.462

-29.488 0.547 -59.237 -1.624 -29.488 0.045 -59.237 7.686

-29.268 0.541 -59.438 -1.474 -29.268 0.306 -59.438 0.405

-29.848 -0.046 -59.826 13.501 -29.848 -0.017 -59.826 13.494

-29.647 -0.035 -59.343 13.794 -29.647 -0.055 -59.343 13.839

-29.054 -0.055 -59.037 13.506 -29.054 -0.063 -59.037 13.496

-29.378 -0.31 -47.033 18.089 -29.378 -0.3 -47.033 18.292

-29.681 -0.08 -59.301 13.688 -29.681 -0.1 -59.301 13.742

-29.218 -0.079 -59.815 13.862 -29.218 -0.052 -59.815 13.811

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Test Result (Lint Free + Alcohol)

before after

Ref(dBm) IL(dB) Ref(dBm) RL(dBm) Ref(dBm) IL(dB) Ref(dBm) RL(dBm)

-26.684 0.587 -56.571 -0.534 -26.684 0.274 -56.571 3.996

-26.516 0.304 -56.243 0.385 -26.516 0.445 -56.243 -0.566

-27.493 0.28 -58.47 0.887 -27.493 0.005 -58.47 13.33

-26.696 -0.012 -56.578 13.36 -26.696 0.03 -56.578 13.383

-29.488 0.048 -59.237 13.991 -29.488 0.076 -59.237 13.993

-29.268 0.044 -59.438 7.618 -29.268 0.068 -59.438 8.328

-29.848 -0.138 -59.826 13.311 -29.848 -0.109 -59.826 13.341

-29.647 -0.079 -59.343 13.928 -29.647 -0.045 -59.343 13.962

-29.054 -0.007 -59.037 12.933 -29.054 0.022 -59.037 13.045

-29.378 0.35 -47.033 14.448 -29.378 0.366 -47.033 14.387

-29.681 -0.007 -59.301 2.485 -29.681 0.03 -59.301 3.598

-29.218 0.131 -59.815 12.613 -29.218 0.138 -59.815 13.238

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IL Result

Lint free+ Alcohol

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Test Result (Compressed Air)

before after

Ref(dBm) IL(dB) Ref(dBm) RL(dBm) Ref(dBm) IL(dB) Ref(dBm) RL(dBm)

-26.684 0.103 -56.571 14.198 -26.684 0.095 -56.571 14.138

-26.516 -0.12 -56.243 13.993 -26.516 -0.127 -56.243 13.99

-27.493 -0.048 -58.47 13.837 -27.493 -0.06 -58.47 13.811

-26.696 -0.022 -56.578 13.302 -26.696 -0.036 -56.578 13.289

-29.488 -0.042 -59.237 13.895 -29.488 -0.049 -59.237 13.887

-29.268 -0.043 -59.438 13.717 -29.268 -0.045 -59.438 13.706

-29.848 -0.029 -59.826 13.47 -29.848 -0.029 -59.826 13.462

-29.647 -0.06 -59.343 13.962 -29.647 -0.059 -59.343 13.96

-29.054 -0.104 -59.037 13.476 -29.054 -0.106 -59.037 13.476

-29.378 0.086 -47.033 13.476 -29.378 0.073 -47.033 13.561

-29.681 -0.08 -59.301 13.768 -29.681 -0.073 -59.301 13.921

-29.218 -0.042 -59.815 13.911 -29.218 -0.008 -59.815 13.898

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IL Result

Compressed Air

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Test Result (Gel)

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IL Result

Gel

before after

Ref(dBm) IL(dB) Ref(dBm) RL(dBm) Ref(dBm) IL(dB) Ref(dBm) RL(dBm)

-26.684 0.121 -56.571 13.544 -26.684 0.134 -56.571 13.947

-26.516 -0.013 -56.243 14.074 -26.516 -0.006 -56.243 14.051

-27.493 0.007 -58.47 13.896 -27.493 0.043 -58.47 13.88

-26.696 0.012 -56.578 13.365 -26.696 0.04 -56.578 13.383

-29.488 0.01 -59.237 13.946 -29.488 0.07 -59.237 13.932

-29.268 0.12 -59.438 6.671 -29.268 0.136 -59.438 7.277

-29.848 0.02 -59.826 13.444 -29.848 0.052 -59.826 13.458

-29.647 0.045 -59.343 13.711 -29.647 0.06 -59.343 13.735

-29.054 0.009 -59.037 13.342 -29.054 0.032 -59.037 13.388

-29.378 0.204 -47.033 13.935 -29.378 0.21 -47.033 14.057

-29.681 0.013 -59.301 13.932 -29.681 0.04 -59.301 13.988

-29.218 0.032 -59.815 14.017 -29.218 0.044 -59.815 13.983

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Summary• AR Coated connectors were not damaged by the cleaning process

• Nevertheless, the non-abrasive cleaners (i.e. compress gas & gel) provides best consistency on the before & after IL & ORL

• Traces of residue dust around guide-pin areas are found after cleaning by pen-type cleaners

Future work• Continue discussion between HPE and Resolute Technologies on Dust Maze to

further investigates effect of dust on connectors in a controlled/predictable environment

• Any other suggestion regarding to cleaning?

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Discussion

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