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SBM (Single Fiber Fixed MUX DEMUX Card)
if defective or damaged
Seller warranty (if applicable)
Multiple options available
Single Fiber DWDM MUX/DEMUX Board – 4 Channel & 8 Channel SBM Series
The Single Fiber MUX/DEMUX Board (SBM Series) supplied by D-TECH Trading is specially designed for multi-wavelength DWDM network applications. It can multiplex multiple optical wavelengths onto a single optical fiber or separate multiple optical channels transmitted through the same fiber according to wavelength.
Based on Thin Film Filter (TFF) technology, the SBM board operates on the ITU grid with 100 GHz channel spacing. Optional ITU channel wavelengths are available according to network requirements.
The board supports serial connection with an EDFA optical amplifier for single-fiber bidirectional long-distance transmission. It also includes an OSC monitoring channel, optical power monitoring, and an optical power indicator for the MUX signal port.
Quick Specifications
Key Features
- Supports 4-channel or 8-channel DWDM MUX and DEMUX
- Single-fiber bidirectional optical transmission
- ITU grid operation with 100 GHz channel spacing
- Based on Thin Film Filter technology
- Optional ITU channel wavelengths
- Supports EDFA serial connection
- Built-in OSC monitoring channel
- Supports optical power monitoring of the SIG port
- Optical power indicator for the MUX port
- Supports extended cascading through the EXP port
- Low insertion loss
- Compact one-slot board design
Applications
DWDM Networks
Multiplexes multiple DWDM optical channels over a single optical fiber.
Long-Distance Transmission
Supports single-fiber bidirectional long-distance transmission with EDFA amplification.
Metro & Backbone Networks
Suitable for telecom, ISP, enterprise, metro, and backbone optical networks.
Optical Monitoring
Provides OSC monitoring and optical power monitoring of the MUX signal port.
Product Specifications
| Specification | 4-Channel | 8-Channel |
|---|---|---|
| Function | Supports MUX and DEMUX of 4 DWDM optical signals | Supports MUX and DEMUX of 8 DWDM optical signals |
| Channel Number | 4λ @ 100 GHz | 8λ @ 100 GHz |
| Insertion Loss | ≤2 dB, λ-IN to SIG-OUT / SIG-IN to λ-OUT | ≤3 dB, λ-IN to SIG-OUT / SIG-IN to λ-OUT |
| 3 dB Spectral Width | >75 GHz | >75 GHz |
| Adjacent Channel Isolation | >25 dB | >25 dB |
| Non-Adjacent Channel Isolation | >35 dB | >35 dB |
| OSC Channel | 1491 nm / 1511 nm | 1491 nm / 1511 nm |
| Single-Fiber Bidirectional Coupling Loss | ≤1.5 dB, RC to LINE / LINE to TC | ≤1.5 dB, RC to LINE / LINE to TC |
| OSC Coupling Loss | ≤1.5 dB, OSC-A to LINE / LINE to OSC-D | ≤1.5 dB, OSC-A to LINE / LINE to OSC-D |
| Slot Requirement | 1 Slot | 1 Slot |
| Power Monitoring | Supports optical power monitoring of the MUX port (SIG) | Supports optical power monitoring of the MUX port (SIG) |
| Indicator Light | Supports optical power indicator for the MUX port (SIG) | Supports optical power indicator for the MUX port (SIG) |
| Extended Function | Supports extended cascading through the EXP port | Supports extended cascading through the EXP port |
| Cascading Limitation | Docking is not supported during cascading | Docking is not supported during cascading |
4-Channel Fixed MUX/DEMUX Board Models
| Card Model | Port Range | Add Center Frequency Range | Drop Center Frequency Range |
|---|---|---|---|
| SBM2242 | A22/D39, A23/D40, A24/D41, A25/D42 | 192.20–192.50 THz | 193.90–194.20 THz |
| SBM4222 | A39/D22, A40/D23, A41/D24, A42/D25 | 193.90–194.20 THz | 192.20–192.50 THz |
| SBM2646 | A26/D43, A27/D44, A28/D45, A29/D46 | 192.60–192.90 THz | 194.30–194.60 THz |
| SBM4626 | A43/D26, A44/D27, A45/D28, A46/D29 | 194.30–194.60 THz | 192.60–192.90 THz |
8-Channel Fixed MUX/DEMUX Board Models
| Card Model | Port Range | Add Center Frequency Range | Drop Center Frequency Range |
|---|---|---|---|
| SBM2246 |
A22/D39, A23/D40, A24/D41, A25/D42 A26/D43, A27/D44, A28/D45, A29/D46 |
192.20–192.90 THz | 193.90–194.60 THz |
| SBM4622 |
A39/D22, A40/D23, A41/D24, A42/D25 A43/D26, A44/D27, A45/D28, A46/D29 |
193.90–194.60 THz | 192.20–192.90 THz |
Installation Recommendation
Select the correct SBM card model according to the required add and drop ITU channels. Confirm that the frequency plan at both ends of the single-fiber link is correctly paired before installation.
When connecting the board with an EDFA or additional DWDM equipment, calculate the complete optical power budget, including MUX/DEMUX insertion loss, coupling loss, fiber attenuation, connector loss, and amplifier gain. Use the OSC and SIG optical monitoring functions to verify link performance and maintain stable long-distance transmission.
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