Mini-MT Connector Interface

1

Team Mission

● Develop a new interface technology to enableincreased panel density and reduced systemcost.

● Meet the requirements for an opticaltransceiver interface rather than just a cablingconnector.

● Use active component suppliers’ input todevelop an optimum solution. No cost shift toactive devices

Team Mission (continued)

● Single Mode and Multimode solution.

● Enable multiple sources of transceivers,connectors, and cable.

● Standardize optical connector through TIAand IEC

Current Supporters

● Connectors, Cable, Cable Assemblies■ Siecor■ AMP■ Fujikura■ Furukawa■ Sumitomo

Current Supporters

● Transceivers■ AMP - Lytel Division■ Hewlett Packard■ Vixel■ Fujikura America

Current Supporters

● Molded Ferrule Technology■ US Conec■ Fujikura■ Furukawa/ Europtics■ Sumitomo

Application Evolution

● High reliability cost sensitive applications● NTT interoffice network - 1988● Current

■ Telecoms - FTTH - SM■ Datacom - backbone, mainframe links -

SM&MM

● Future■ Datacom - Fiber to the desk

MT History and Future in NTT Network

1983 MT Ferrule Developed1988 4,8 fiber SM MT Deployed in Network1991 MPO style Connector Deployed1996 IEC Standard completed for MPO style1997 New Optical Access System Deployed

( Pi System)2000 FTTH Cost Equals Copper

Statement of Direction

• NTT Has:

- Developed MT ferrule and MPO applications for many years

- Developed the Mini-MT connector around the small MT ferrule

- Planned future major application for two fiber connections

• NTT will provide technical data to support U.S. standardsactivity through US Conec, an NTT affiliate

• NTT has submitted the Mini-MT to IEC 86B for approval to startstandardization

• NTT is establishing multiple sources today and encouragesworld-wide supply

License Policy

● NTT complies with IEC and ANSIlicensing requirements

● NTT offers to license its patents whichinclude features of the Mini-MT forreasonable terms to any company

MT Production Volume(000)

1994 1995 1996 1997Est.

0500

1000150020002500300035004000

1994 1995 1996 1997Est.

Mini-MT4,8 MT

FTTH AND MT TECHNOLOGIESEasy to joint cables with lower lossMT connectors :

Giving lowest loss joints but with longer timeFusion splicing :

Mechanical splice : Easy to joint a drop cord but with higher loss

MT MT or splicing MT

Mech.splice

ONU

SC or MPO

Pre-connectorized optical fiber cable

Central Office

Customer Premises

Node

FTM

AURORA

SLT

AURORA: Au tomatic Optical Fibe r O pe ra tion Support System

FTM: Fiber Termination Module SLT: Subscriber Line Terminal ONU: Optical Network Unit

THE NEW OPTICAL ACCESS SYSTEM- THE PI SYSTEM -

AURORA

SLT

FTM

Optical splitter1:32

1:10Node

Central Office

ONU

systemPI

COSTConventional Single Star

PI system1

5

10

01995 1997

Metallic Rates

The New Optical Access System is a system for installing Optical Network Units (ONUs) near customers. Each ONU accomodates a maximum of 10 lines, which will share one SLT at a cost comparable to that of metallic networks.

AURORA: Automatic Optical Fiber Operation Support SystemSLT: Subscriber Line Terminal ONU: Optical Network UnitFTM: Fiber Termination Module

FTTH on Sigle star network

1998 - 2000

Optical Fiber Cable

Drop Wire

rela

tive

cost

OPTICAL FIBER WIRING SYSTEMIN THE PREMISES

ONU

ONU

Termination cable

SC connector

MPO-2

MT-4

MPO-2

MPO-2

Distribution cabinet in a floor

Main dstribution cabinet

Intra-premises cable

Drop cable

Customer premises

Fibre Channel Requirements

z Half the costz Small size (board edge, EMI)z Multi-Sourcez Low Technical Riskz Market Acceptance

Added Customer Requirements

● SM performance = SC

● Telco reliability● Easy to clean● Term. technology independent

Variety is the spice of life

● Terminationmethods

● Lower parts count● Improved materials -

lower cost

AMP LightCrimp XTC Connector

Plunger

Resilient Spheres

Strength Members

Buffer

Fiber

Ferrule

Siecor Unicam Technology

Fiber Stub

Factory Polish

Mechanical Splicewith Index Matching Gel

Field Fiber

Parts Comparison(mated pair)

z SC Duplex48 total parts6 precision parts

(4) ferrules

(2) sleeves

z Mini MT Plug & Socket15 total parts4 precision parts

(2) ferrules

(2) guide pins (low cost

Cost / Installed Systems Approach.● 39 % Electronics● 27 % Cable● 20 % Labor● 9 % Connecting Hardware● 5 % Connectors

Optica l F ibe r Pro je ct Typica l

Labor20%

Connec tors5%

Cable27%

Connec ting Hardw are

9%

Elec tronics39%

Mini-MT

0

2

4

6

8

10

12

14

16

18

20

SC Duplex RJ-45 3M Lucent LC Mini-MT

mm

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

inch

es

Heigth

PCMCIA Type II

PCI hard rqmt

PCI goal

PCMCIA Type III

Height Comparison

0

5

10

15

20

25

30

SC Duplex RJ-45 3M Lucent LC Mini-MT

mm

0.00

0.20

0.40

0.60

0.80

1.00

inch

es

Width Comparison

Increased Panel Density

Ribbon Cables Offer 20% Cost Reduction

2.9 mm

750 um

Cost Savings Summary

● Electronics - Increased port density reducesnumber of cards in hubs and enables limitedspace applications

● Cable - 20% improvement through ribbons● Termination and Installation Labor - 2x

increase in # of fibers per terminationoperation

● Connecting Hardware - Low precision parts● Optical Connectors - 1/2 the cost of SC Dup.

SM Insertion Loss

0

5

10

15

20

25

0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

Loss (dB)

Occ

uren

ces

Average = 0.19 dBMaximum = 0.46 dB

SM Return Loss

0

5

10

15

20

25

30

35

40

45

50

1 2 3 4 5 6 7 8

Sample

Ret

run

Loss

1310

1550

Average -41 dBMaximim -37 dB

SM Temperature Cycle

-300

-200

-100

0

100T

empe

ratu

re

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

Loss

Cha

nge

(dB

)

3 Connector Pairs-30 to 70 C 10 Cycles

Mini-MT draft interface

Standardization Track Record

● IEC 874-16 MT Sectional 09/94● IEC 1754-5 MT Interface 11/96● IEC 1754-7 MPO Interface 11/96● TIA FOCIS for MT in-progress● TIA FOCIS for Mini-MT submitted 1/97● IEC NWIP presented 2/97● IEC NWIP to be submitted 3/97

Introduction plans

● First products featuring parts from Japanavailable 2nd quarter.

● Amp/Siecor can/will provide cableassemblies produced with these parts

● Amp and Siecor versions later this year.

Ferrule Availability

● 4 Manufacturers of MT & Mini-MT■ Fujikura■ Furukawa■ Sumitomo■ US Conec

● 5 Channels to market■ Above + Europtics

Mini-MT: The right choice

● Half the size & cost of duplex SC● Telco apps combine to drive

volume/cost● Enables system cost improvement● SM performance● Standards momentum for MT style● Multiple sources today! Globally