Product Overview

QAMnet wEDFA series are Gain-Flattened Erbium Doped Fiber Amplifiers designed for amplifying HFC, RFoG and FTTH applications that incorporates multiple lasers with different wavelength. These lasers are typically defined as Dense Wavelength Division Multiplexing (DWDM) lasers. When a standard EDFA is used to amplify multiple DWDM lasers, the output power level of various lasers will vary according to the gain profile of erbium fiber. This gain variation can be as much as 6 dB in magnitude. The wEDFA series has unique features of dual-stage amplification and internal Gain Flattening Filter (GFF) to compensate this gain variation. This design enables the wEDFA to reduce the gain variation down to ± 0.5dB over and making all the DWDM lasers have a nearly equal level of power.

Depending on the input power level of each channel, the wEDFA can amplify from single laser to 32 DWDM lasers. The wEDFA series are powerful amplifiers incorporating four pump sources, two 980 nm lasers and two 1480 nm lasers. With all four pump lasers set to maximum operating current, the total output power level of the wEDFA can reach +23 dBm (200mW).

Housed inside standard 1RU height rack mount case, the wEDFA has a simple control interface and clear LCD display. The wEDFA series are constructed with 100% qualified components to ensure 15+ years of continuous operating life. The wEDFA series is covered under three year standard warranty. QAMnet’s technical team provides full products support and applications development consultation.

Applications

• HFC
• FTTH
• RFoG

Features

• Compatible with WDM PON, NarrowCasting, DWDM
• Flatten gain amplification from 1530nm to 1560nm
• Amplify 4 to 32 DWDM channels
• High output power up to +23dBm
• Four pump sources can be adjusted individually
• Two 980nm pump lasers
• Two 1480nm pump lasers

Feature Name	Description
Technical Specification
Operating Wavelength Range	1530 to 1560 nm
Amplifier Design	Dual-stage with internal Gain Flattening Filter
Output Power Level	+22dBm, +23 dBm
Number of Pump Laser	4 total, 980 nm (2) and 1480 nm (2)
Input Signal Level per Channel	-3 to -15 dBm
Number of Wavelength Channel	1-32
Optical Gain per Channel	13 - 21 dB, depending on input level *
Gain Flatness	±0.5 dB over full wavelength range of 32 channels
Noise Figure (NF)	5.0 dB typ.
Output Power Stability	±0.1 dB over 8 hours
Input/Output Isolation	30 dB min.
Optical Fiber	Single Mode, SMF-28
Mechanical Specifications
Operating Temperature Range	0°C to +50°C
Storage Temperature Range	-40°C to +70° C
Power Supply	80 – 240 V, 43 – 63 Hz AC 40 - 58 VDC (Optional)
Power Consumption	60 W max.
Housing Dimensions	1RU: 19”(W) x 14”(D) x 1.75”(H)
Control / Monitoring	Pump Laser Temperature and Current
Display	Output Power Level, TEC Temperature
Alarm	Over Temperature , Over Current
Optical Connectors	SC/APC or Customer Specified