C-Band EDFA Optical Amplifier – APX-EDFA-C-BAND
Product Overview
The Apex APX-EDFA-C-BAND is a single-stage C-band erbium-doped fiber amplifier that restores optical power lost through fiber attenuation and passive component insertion loss. It keeps DWDM and SDH spans within budget so more channels can be carried without extra regeneration.
Key Features
- Single-stage C-band EDFA for metro, regional and long-haul spans
- Operating wavelength 1529–1561nm covering the full C-band DWDM grid
- Three gain classes: 15dB, 20dB and 25dB
- Wide input power windows matched to each gain class
- Maximum output power up to 16dBm
- Low noise figure from <5.5dB to <6.5dB
- Automatic shutdown protection on loss of input signal
- Compact shelf form factor for metro and access sites
Technical Specifications
| Specification | Detail |
|---|
| Part Number | APX-EDFA-C-BAND |
| Brand | Apex |
| Amplifier Type | Single-stage C-band EDFA; backward-pumped Raman amplifier |
| Operating Wavelength | 1529–1561nm (EDFA, C-band) |
| Gain Options | 15dB / 20dB / 25dB |
| Channel Gain | 10–20dB (15/20dB models); 15–25dB (25dB model) |
| Input Power Range (15dB) | -26 to +6dBm |
| Input Power Range (20dB) | -31 to -1dBm |
| Input Power Range (25dB) | -32 to -4dBm |
| Maximum Output Power | 16dBm |
| Noise Figure | <5.5dB to <6.5dB |
| Raman Pumping | Backward-pumped |
| Protection | Automatic shutdown protection |
Available Configurations
APX-EDFA-C-BAND
Available in 15dB, 20dB and 25dB gain classes. The lower-gain models suit add-drop and metro positions with stronger input signals, while the 25dB class serves long spans with weak input power.
Applications
🔌 Compensating Optical Component and Fiber Loss
Restores power consumed by multiplexers, splitters, OADM modules and fiber spans so downstream receivers stay within their operating window.
🌐 Extending DWDM Reach
Pushes DWDM wavelengths further across metro and regional networks, reducing the number of electrical regeneration points on a route.
🛰️ Long-Haul SDH and DWDM OSNR Improvement
Backward Raman amplification lifts optical signal-to-noise ratio on long spans, improving margin for high-order modulation and dense channel plans.
Compatibility
Interoperable with major optical transport and networking platforms. Standard C-band gain blocks and backward Raman pumping integrate into existing DWDM, SDH and OTN transport without changes to the line system.
Frequently Asked Questions
What is the Apex APX-EDFA-C-BAND?
The Apex APX-EDFA-C-BAND is a single-stage C-band EDFA offered in 15dB, 20dB and 25dB gain classes with up to 16dBm output power.
Why Choose Apex
- Three EDFA gain classes cover short metro add-drop points and long weak-signal spans
- Backward Raman amplification adds reach and OSNR margin without a new regeneration site
- Low noise figure supports dense DWDM channel plans and high-order modulation
- Engineering support for span budgeting and amplifier placement
