Industrial Fiber Optic Bypass Module With AC/DC Input
Overview
The Industrial Fiber Optic Bypass Module is a high-reliability optical protection and switching device designed for continuous monitoring and safeguarding of fiber communication links.
Featuring low insertion loss, high switching stability, and power-off optical pass-through capability, it ensures uninterrupted optical transmission in the event of device failure or power loss.
With a compact DIN-rail metal enclosure, wide voltage input support, and compatibility with both multimode and single-mode fiber, this fiber bypass module is an essential component for high-density optical systems, laboratory test platforms, and metropolitan communication networks requiring maximum uptime and optical path security.
Technical Data
| Product Name | Fiber Optic Bypass Unit |
| Power Interface | Standard industrial terminal block. |
| Polarity Protection | Support |
| Optical Fiber Interface | LC |
| Wavelength Range | 850±40/1300±40nm; 1260~1650nm |
| Test Wavelength | 850/1300nm; 1310/1550nm |
| Insert Loss | Typ:0.6 dB Max:1.0 dB ; Typ:0.6dB Max:1.0 dB |
| Return Loss | MM≥30 dB SM≥50 dB |
| Channel Crosstalk | MM≥35 dB SM≥55 dB |
| Polarization Loss | ≤0.05 dB |
| Wavelength Loss | ≤0.05 dB |
| Temperature Loss | ≤0.05 dB |
| Repeatability | ≤0.05 dB |
| Operating voltage | 3.3V-5V |
| Service life | ≥100000000 times |
| Switching time | ≤10 ms |
| Transmission optical power | ≤500 mw |
| Environment | Working temperature:-20°~ 70°C Storage temperature:-40°~ 85°C |
Diagram



Key Features
- Automatically switches optical paths when power is lost, ensuring uninterrupted fiber transmission
- Ideal for inline deployment with fiber switches, routers, or monitoring systems
- Supports single or dual bypass channels with clear SW1 / SW2 status indicators
- Ultra-low insertion loss (typical 0.6 dB, max 1.0 dB) minimizes signal degradation
- Wide wavelength support: 850/1300 nm (MM) and 1310/1550 nm (SM)
- High return loss and low channel crosstalk for signal integrity in dense fiber environments
- Extremely low polarization, wavelength, and temperature-related losses
- Fast and Durable Switching Mechanism
- Optical switching time ≤10 ms
- Ultra-high mechanical reliability with service life ≥100 million switching cycles
- Supports high optical transmission power up to 500 mW
- Voltage: 12V–52V DC and AC Input, with polarity protection
- Operating temperature: -20°C to +70°C
- Standard LC fiber interfaces for easy integration
- Rugged metal housing (114 × 93 × 35 mm) with DIN-rail mounting
- Can operate in cascade or ring network topologies
- Shares power supply with optical switches for simplified wiring
- Customizable optical switch modules to meet different optical path requirements
- Ideal for dynamic optical path configuration in test and monitoring systems
Applications
The Industrial Fiber Bypass Module is widely deployed in fiber networks where link continuity and protection are mission-critical, including:
- Metropolitan Area Networks (MAN):
- Ensures uninterrupted backbone connectivity during equipment power failures or maintenance.
- Optical Communication System Monitoring:
- Enables real-time protection and rerouting of fiber paths in monitoring and protection systems.
- Laboratory R&D and Testing Platforms:
- Supports dynamic optical path switching for automated testing and high-efficiency test environments.
- Add/Drop Multiplexing & Dynamic Optical Configuration:
- Ideal for systems requiring frequent optical path changes without physical rewiring.
- High-Density Fiber Systems:
- Suitable for telecom, data centers, utilities, and industrial networks with strict uptime requirements.
Packing List
When using the product for the first time, please first check whether the package is complete and whether the accessories are complete!
1 × Main equipment
1 × Instruction manual
1 × Warranty card
Special Notes: There are special needs for the product, please make special explanation!

