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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
Passive Devices in OpticalCommunication System
MO (Micro Optics)
FBT (Fusion Biconic Tap)
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
Passive Devices in OpticalCommunication System
MO (Micro Optics)
FBT (Fusion Biconic Tap)
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
Passive Devices in OpticalCommunication System
MO (Micro Optics)
FBT (Fusion Biconic Tap)
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
THE END