Why we need optical communication l Advantages l

Why we need optical communication ? l Advantages: l l l A. Weight and size B. Material cost C. information capacity. D. No Electrical connection E. No Electromagnetic Interference F. Better Security l Demand: l Broadband Back to Web

Product introduce l Fiber l Connector/adapter l Patchcord /pigtail l WDM/Coupler l Attenuator Back to Web

Product introduce: Fiber 50/125 um 9/125 um 62. 5/125 um Multimode Singlemode 9 um 125 um 250 um Back to Web

Connector/adapter: l Conventional connector: ST, FC, SC, Duplex l Angled FC, Angled SC l FDDI, ESCON l SMA, BICONIC, D 4 l ST l D 4 SC FDDI FC MU Back to Web

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

Connector/Adapter: Ferrule polishing PC polishing: Physical Contact l UPC polishing: Ultra Physical contact l APC polishing: Angled Physical contact l l l Back reflection ( return loss) PC: 40 d. B UPC: 55 d. B (Digital , CATV, Telephony system) APC: 65~70 d. B (CATV, Analog system, reflection sensitive) Back to Web

Pathcord/Pigtail: l Singlemode: l Multimode l Simplex: l Duplex: 9/125 fiber, 900 um or 3 mm yellow jacket : 50/125 or 625/125 fiber, 900 or 3 mm orange jacket single cable with connector in two ends two cable parallel with connector in two ends. l Back to Web

WDM-Wavelength Division Multiplexers 1310/1550 nm WDM for communications (double the Bandwidth l Application: l 1310 nm MUX WDM DEMUX WDM 1550 nm WDM for Optical Amplifiers: l 980/1550 nm WDM (pump laser : 980 nm) l 1480/1550 nm WDM (pump laser: 1550 nm) l 1310 nm 1550 nm

Coupler: l l l Standard coupler: Narrow band ( +/- 10 nm) Wavelength-Flattened coupler (+/- 40 nm) (Single-window wideband) Wavelength-independent Coupler (+/- 40 nm) (Dual-window wideband) P 1 1310/1550 P 4 P 2 50% Coupler 1310/1550 50% P 3

Coupler: Optical Characteristics P 1 l P 2 P 1 r Coupler 1310/1550 P 3 P 4 Excess Loss: EL= -10 log P 2+P 3 P 1 Insertion Loss: IL 2= -10 log P 2 Coupling Ratio: CR 2= P 2+P 3 Directivity: D= -10 log P 1 r P 1 d. B P 2 P 1 d. B Return Loss: BR= -10 log P 4 P 1 d. B Uniformity: maximum difference of insertion loss between the output channels Back to Web

Attenuator: l Plug l type: Attenuated fiber: Metal-ion doped fiber. l l In-line Metal coating mirror. type: FBT Back to Web

Fiber connections Inc l. The end l Thank you ! Back to Web