1. Why we need optical communication ?
Advantages:
A.Weight and size
B.Material cost
C.information capacity.
D.No Electrical connection
E.No Electromagnetic Interference
F.Better Security
Demand:
Broadband
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2. Product introduce Fiber Connector/adapter Patchcord /pigtail
WDM/Coupler
Attenuator
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3. Product introduce: Fiber
50/125um
9/125um
62.5/125um
Multimode
Singlemode
250um
125um
9um
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4. Connector/adapter: Conventional connector: Back to Web ST SC FC MU D4
ST, FC, SC, Duplex
Angled FC, Angled SC
FDDI, ESCON
SMA, BICONIC, D4
                                                                   
                                                                   
                                                                   
                                                                   
                                                                   
                                                                    ST SC FC
FDDI MU D4

5. Connector/Adapter New trend: Small Form Factor Back to Web
MTP/MPO, FJ, SG (VF-45)
LC, MT-RJ
Mini-MT, Mini_MAC, SCDC
                                                                   
                                                                   
                                                                   
Volition (VF-45)
From the left:
SCDC, LC, MT-RJ,Duplex SC,
Volition Opti-Jack
MT-RJ-AMP
LC-Lucent
New generation connectors– Let the market decide !

6. Connector/Adapter: Ferrule polishing
PC polishing: Physical Contact
UPC polishing: Ultra Physical contact
APC polishing: Angled Physical contact
Back reflection ( return loss)
PC: 40dB
UPC: 55dB (Digital , CATV, Telephony system)
APC: 65~70dB (CATV, Analog system, reflection
sensitive)
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7. Pathcord/Pigtail: Singlemode: 9/125 fiber, 900um or 3mm yellow jacket
Multimode :50/125 or 625/125 fiber, 900 or 3mm orange jacket
Simplex: single cable with connector in two ends
Duplex: two cable parallel with connector in two ends.
                                                                                                                            
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8. WDM-Wavelength Division Multiplexers
1310/1550nm WDM for communications (double the Bandwidth
Application:
WDM for Optical Amplifiers:
980/1550 nm WDM (pump laser :980nm)
1480/1550 nm WDM (pump laser:1550nm)
                                                                                            
MUX
DEMUX
1310nm
1310nm
WDM
WDM
1550nm
1550nm

9. Coupler: Standard coupler: Narrow band ( +/- 10nm)
Wavelength-Flattened coupler (+/- 40nm)
(Single-window wideband)
Wavelength-independent Coupler (+/- 40nm)
(Dual-window wideband) P2 P1
50%
Coupler
1310/1550
1310/1550
50% P4 P3

10. Coupler: Optical Characteristics
P1r P1
Coupler
1310/1550
1310/1550 P3 P4
P2+P3 P1 P4 P1
Excess Loss: EL= -10 log dB
Return Loss: BR= -10 log dB P2 P1
Insertion Loss: IL2= -10 log dB
Uniformity:
maximum difference of insertion loss between
the output channels P2
P2+P3
Coupling Ratio:CR2= dB
P1r P1
Directivity: D= -10 log dB
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11. Attenuator: Plug type: Attenuated fiber In-line type: FBT Back to Web
Attenuated fiber: Metal-ion doped fiber.
Metal coating mirror .
In-line type: FBT
                                                                                                         
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12. Fiber connections Inc
The end
Thank you !
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