Comparatie intre SOA si OFA

FEATURE

OFA

SOA

Typical maximum internal gain (dB)

Typical insertion loss (dB)

Polarisation sensitive?

No

Weack (<2dB)

Pomp source

Optical

Electrical

3 dB gain bandwidth (nm)

Nonlinear affects

Negligible

Yes

Saturation output power (dBm)

Typical intrisic noise figure (dB)

Photonic integrated circuit compatible?

No

Yes

Functional device possibility?

No

Yes

Technology

Description

Advantage

Disadvantage

Suppliers

Erbium Doped

Fiber Amplifier

(EDFA)

Standard

Beyound 2005

Known

tchnology;

proven

manufacturable

Higher cost

Corning, JDS Uniphase, Agere,AlcatelOptronics, NornetHPOCS, Avanex, Altmar,Onetta, Keopsys

Semiconductor

Optical Amplifier

(SOA)

Discrete InP - based

component

Potential low cost;ease of integration;

small size

Low output

power; high

noise;immature

technology

AlcatelOptronics,Genoa,

JDS Uniphase, Nortel

HPOCS,Optical Crossing,Kamelian, OptoSpeed

Performance Characteristics

SOA (TWA)

EDFA

Saturation Output Power

5 to 15 dBm

10 to 20 dBm

Unsaturated Gain

10 to 30 dB

40 to 50 dB

Noise Figure

6 to 9 dB

3 to 5 dB

Polarization Dependence

Varies

None

Size/Length

300 to 1000 μm

Up to 100 m fiber length

Coupling Loss

Large

Small

Bandwidth

> 20THz

1 to 4 THz

Operation Wavelength

1.3 μm and 1.55 μm band

1.55 μm band only