passive element communication

8/7/2019 passive element communication

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OUTLINESOUTLINES

Passive Devices in Optical

Communication System MO (Micro Optics)

FBT (Fusion Biconic Tap)

PLC (Planar Lightwave Circuit)

Conclusions


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Passive Devices in Optical Communication

System

Passive Devices in Optical Communication

System

WDM

1xN

WDM


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Optical Passive DevicesOptical Passive Devices

XWDM

CouplerWDM

Collimator

Iso-collimator

Patchcord

Isolator

Switch

SplitterFiber Array

1x4, 1x8, 1x16, 1x32, 1x48 channel1, 4, 8, 16, 32, 48 channel

1x2, 1x4, dual 1x2 mechanicalCWDM, DWDM, EdgeSMF-type, PM-type for LD moduleSingle, dual stageSM 1260~1620 wideband, MMSC, ST, FC, LC, MU connector

compact, low PDL, 1xN module980/1480/1310/1550/1625FBT

Micro-optics

PLC


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OUTLINESOUTLINES

Passive Devices in OpticalCommunication System

MO (Micro Optics)

Collimator Package

Collimator Design

Others application of collimator

FBT (Fusion Biconic Tap) PLC (Planar Lightwave Circuit)

Conclusions


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MO (Micro Optics) Tech.MO (Micro Optics) Tech.

Switch

Isolator

Collimator

CWDMPMCB

Circulator

VOA

By Gaussian Optics, package technology


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CollimatorCollimator

Collimated beamFiber end

Real image of the

fiber end

Grin Lenses

(1/4 pitch)

Advantages:

1. Fiber-to-fiber coupling efficiency

2. Insert optical components between fiber


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Focus

Profile of Conventional Lens

(Homogeneous index)

Profile of GRIN Lens

Focus

Collimator : LensCollimator : Lens


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Point

Source 0.25 pitchPoint

Source

0.11 pitchPoint

Source

Collimator : how to collimate by Grin lensCollimator : how to collimate by Grin lens


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Pigtail Assembly


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Cut off point

Angle polishing

AR Coating

Pigtail Assembly


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UV Adhesive

Epoxy

Collimator Assembly


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Align faces

Mark

Collimator Assembly


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Collimator Assembly

P/M

UV Adhesive

Positioner #2 (Reference)Positioner #1 (to be assembled)


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Simulation of Collimator Ball lens DATASimulation of Collimator Ball lens DATA


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Ball Lens GapBall Lens Gap

divergence beam Collimated beam Convergence beam


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-0.20

-0.10

0.00

0.10

0.20

0.30

0.2 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.3 0.31 0.32 0.33

gap (mm)

de

gree

GRIN BALL

Ball Lens CollimatorBall Lens Collimator

Optimum Gap: 0.24~0.29mm


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Other Application of CollimatorOther Application of Collimator

Filter (DWDM, CWDM)

Core (Isolator)Mirror (Switch)Crystal (VOA)

isolator


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OUTLINESOUTLINES


MO (Micro Optics)


Coupler

WDM

PLC (Planar Lightwave Circuit) Conclusions


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FBTFBT

By coupledmode theory 1x3

Coupler

Tree

Coupler

Low PDL

Coupler

Taper

Coupler

WDM

1x2

Coupler


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1310 1550

80nm

50%

100%

wavelength

50% DWBCratio

COUPLER

50%

core cladding

50%

100%

Single/Dual Window Wide band (+/-80nm) Custom defined spec.

Pass Telcordia 1209

80nm


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Ultra Flatness Dual Window CouplerUltra Flatness Dual Window Coupler

Normal DWBC50nm DWBC50nm

Wavelength insensitivefor a wide range


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NEW SWBC80nmUltra Flatness Single Window 80nm CouplerUltra Flatness Single Window 80nm CouplerNormal SWBC80nm

Wanshih Electronic, Co., Ltd.

Wavelength insensitivefor a wide range


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Ultra-flatness Coupler for CWDM

System

Ultra-flatness Coupler for CWDM

System cover 8 channels from 1470nm to 1610nm

very low wavelength dependent loss < 0.35dB

high reliability

cost competitive

Wavelength 1470 90 1510 30 50 70 90 1610 nm

S-band

Uniformity < 0.6 dB

IL

C-band L-band

Wavelength dependent loss 17dB Wideband +/-15nm Insertion Loss 0.3dB

Return loss 55dB 1310/1550;1310/1625;1480/1550;1550/1625

15501310

IL1

IL2

Loss

wavelength

17dB

Wanshih Electronic, Co., Ltd.


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OUTLINESOUTLINES


MO (Micro Optics)


PLC (Planar Lightwave Circuit) V-groove, fiber array, package

AWG, splitter, inteleaver, switch, VOA-MUX Conclusions


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PLCPLC

By integrated optics, waveguide theorem


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V-groove: Si-sub (wet Etching)V-groove: Si-sub (wet Etching)


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V-groove: glass-sub.V-groove: glass-sub.

1 8 16 32 40

V-Groo ve ChipMaterial: BK7 Glass, Pyrex

Groove Depth Accuracy 0.03 m Pitch Accuracy 0.03 m Groove Number: 1 - 128


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Fiber ArrayFiber Array

Ribbon Fiber

V-groove

:


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3.3 Splitter Structure3.3 Splitter Structure

Molding sealant

HousingcaseOptical adhesiveFiber

PLC chip4 ch Fiber array

1ch Fiber array

1x8 : 88x8x7mm (Hitachi-cable) 1x4: 87x8x7mm (Hitachi-cable)


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PLC

PLC


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(Suruga)(Suruga)


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()()


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()()


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1. AWG (DWDM) module1. AWG (DWDM) moduleHitachi-cable


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Power splitterPower splitter


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Splitter in PON (passive optical network)Splitter in PON (passive optical network)


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WINC (wavelength insensitive coupler)WINC (wavelength insensitive coupler)

I l ( l h li )


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Interleaver (wavelength splitter)Interleaver (wavelength splitter)

Th l i l i h


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Thermal optical switchThermal optical switch

VOA MUXVOA MUX


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VOA-MUXVOA-MUX

PLCPLC


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PLCPLC

PLC


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PLCICPLCIC:IEEE Communications Magazine September 2003


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PLC PLC

,

(

)IC

PLC(20),

OUTLINESOUTLINES


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OUTLINESOUTLINES


MO (Micro Optics)


PLC (Planar Lightwave Circuit) Conclusions

Devices Certification Road map

D i C tifi tiD i C tifi ti


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Devices CertificationDevices Certification

GR-1221 ( at least 6 mon.)

Generic Reliability Assurance Requirements forPassive Optical Components

GR-1209 (at least 3 mon.)

Generic Requirements for Passive Optical

Components.

GR 1221GR 1221


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GR-1221GR-1221

Sampling

Thermal Shock

()High Temp

Storage

( Dry Heat )

Vibration Damp

Heat

Mechanical

Shock

Low

Temp

Storage

Temperatur

e Cycling

Cycling

Moisture

Resistance

Test

Mechanical

Integrity

Endurance

GR 1209GR 1209


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GR-1209GR-1209

Sampling

Temp.

Humidity

Aging

Vibration Temp

Cycling

Temp

Humidity

Cycle

Fiber

Side Pull

Cable

Retention

Component/

ModuleImpact

Water

Immersion

Vibration

GR-1221

DampHeat GR-

1221

Road mapRoad map


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Road mapRoad map

CWDM

EDFA

PLC

OEIC

2002 2004 2005 2010

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passive element communication