4 Channel DWDM Fiber Mux Demux LGX
MUX/DEMUX RX: C53-C56 TX:C25-C28 Side B
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SINGLE FIBER • BI-DIRECTIONAL DWDM
4 Channel DWDM Fiber Mux Demux
4 Services • 8 DWDM Wavelengths • Single Fiber • 100GHz ITU Grid • 1U Rack Mount
Product Overview
The 4 Channel DWDM Fiber Mux Demux is a single-fiber, bi-directional DWDM solution designed to transmit 4 independent services using 8 DWDM wavelengths over one optical fiber.
It operates with C25–C28 and C53–C56 DWDM wavelengths and follows the ITU-T G.694.1 100GHz grid, allowing efficient use of C-band optical spectrum.
This solution is suitable for ISP backbone, data centers, cloud infrastructure, broadcasting, financial networks, government networks and other applications where fiber resources are limited but higher network capacity is required.
SERVICES
4 Channel
WAVELENGTHS
8 DWDM
LINE
1 Fiber
CHANNEL GRID
100 GHz
Key Features
✓ 4 Channels over Single Fiber
✓ Bi-Directional DWDM Transmission
✓ 8 DWDM Wavelengths
✓ C25–C28 / C53–C56 Channels
✓ ITU-T G.694.1 100GHz Grid
✓ Thin Film Filter (TFF) Technology
✓ Low Insertion Loss ≤ 2.4 dB
✓ Channel Isolation up to 45 dB
✓ EXP Port for Future Expansion
✓ Custom DWDM Wavelength Design Supported
How Single Fiber BIDI Works
SIDE A
MUX
Combines C25–C28 and C53–C56 wavelengths and sends multiple services through a single optical fiber.
SINGLE FIBER
BIDI LINK
Both directions of communication use different DWDM wavelengths over the same single-mode optical fiber.
SIDE B
DEMUX
Separates the corresponding wavelengths at the receiving side for stable point-to-point service transmission.
SINGLE FIBER DWDM TRANSMISSION
MUX Side-A → C25–C28 + C53–C56 → Single Fiber → DEMUX Side-B
Supported DWDM Wavelengths
| DWDM Channel | Wavelength | Channel Group |
|---|---|---|
| C25 | 1557.36 nm | C25–C28 |
| C26 | 1556.55 nm | C25–C28 |
| C27 | 1555.75 nm | C25–C28 |
| C28 | 1554.94 nm | C25–C28 |
| C53 | 1535.04 nm | C53–C56 |
| C54 | 1534.25 nm | C53–C56 |
| C55 | 1533.47 nm | C53–C56 |
| C56 | 1532.68 nm | C53–C56 |
Optical Specifications
| Parameter | Specification |
|---|---|
| Channel Spacing | 100 GHz (Approx. 0.8 nm) |
| Channel Passband | ±0.11 nm |
| Insertion Loss | ≤ 2.4 dB |
| Return Loss | ≥ 45 dB |
| Directivity | ≥ 45 dB |
| Adjacent Channel Isolation | ≥ 30 dB |
| Non-Adjacent Channel Isolation | ≥ 45 dB |
| Polarization Dependent Loss | ≤ 0.3 dB |
| Polarization Mode Dispersion | ≤ 0.1 ps |
| Center Wavelength Accuracy | ±0.05 nm |
| Technology | Thin Film Filter (TFF) |
Fiber & Interface
| Parameter | Specification |
|---|---|
| Fiber Type | Single Mode OS2 |
| Connector | LC-UPC |
| Optional Connector | LC-APC |
| Line Port | Single Fiber BIDI |
| Expansion Port | EXP Port Available |
EXP Port – Ready for Future Expansion
The built-in EXP port allows another DWDM Mux/Demux to be cascaded with the system, making it possible to increase network capacity without installing an additional backbone fiber.
Mechanical & Environmental Specifications
| Parameter | Specification |
|---|---|
| Mounting Type | 19-inch 1U Rack Mount |
| Module Support | 4 × LGX Plug-in Modules |
| Dimensions (H × W × D) | 44 × 440 × 230 mm |
| Net Weight | Approx. 3.5 kg |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
Application Areas
ISP & Telecom Backbone
Data Centers & IDC
Cloud Networks
Broadcasting & TV
Banking & Finance
Government Networks
Enterprise Networks
High-Capacity Data Transmission
Important: BIDI Wavelength Pairing
For single-fiber bi-directional DWDM operation, the transceiver wavelengths on Side-A and Side-B must match the corresponding DWDM channel design. Confirm the required C25–C28 and C53–C56 channel mapping before selecting DWDM transceivers.
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