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Optical Line Protection
C-LIGHT Optical Line Protection (OLP) is a critical redundancy solution in optical communication networks, ensuring zero service interruption by monitoring signal strength and quality in real time, coupled with automatic redundant path switching (e.g., 1+1 or 1:N protection architectures). It achieves millisecond-level recovery during fiber cuts, signal degradation, or equipment failures. Core components include optical switches, power detection modules, and intelligent controllers, supporting bidirectional/unidirectional protection modes for long-haul backbones, metro networks, and data center interconnects. Advancements focus on AI-driven dynamic routing optimization, multi-domain coordination (e.g., OTN-OLP synergy), and predictive maintenance to meet ultra-high availability and low-latency demands in 5G, cloud computing, and industrial IoT applications.
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Product Details
OLP Optical Line Protection System

The OLP optical line protection subsystem launched by C-Light Network communication Co., Ltd.is based on the advanced development of optical switch technology. It’s an automatic monitoring and protection system independent of communication transmission system and completely based on the physical link of optical cable. The system can automatically switch the signal to the optical fiber of the protection path when performance deterioration or blocking of work path is detected. In this way, an optical communication network with high reliability, safety, flexibility and strong disaster resistance is established.

Product FeatureProduct Diagram

lApplicable to all kinds of optical communication system

lSupport line protection of dual fiber and single fiber transmission network

lSupport multiple working modes of automatic or manual switching

lSupporting real-time monitoring of main and backup routes

lFast response: switching time<20ms<>

lSupport automatic non-return and automatic return functions, automatic return time can be set to adapt to a variety of application scenarios

lSupport panel button operation. The system can be operated by button on site without management card.

lOLP card and network management card are independent of each other and have no influence on each other

CL-OTN-3900 1RU: 442 (W350 (D) ×44 (H)mm

/CLOLP-xxx-L-1RU

CLOLP-xxx-L 1RU442 (W250 (D) ×44 (H) mm

lSupport multi-kinds of gra phical interface network management, such as SNMP, Web

lSupport power-off and power-on retention functions

lSupport AC power 220V, DC power -48V, and 1+1 power input protection

Product Specification

FunctionParameter
Working wavelength range1260nm ~ 1650nm
OLP typeOLP-1:1OLP-1+1OLP-1-1OLP-BIDI
Switching time<35ms<15ms<15ms<15ms
Main path loss<4dB<1.3dB<1.3dB<5.5dB
Backup path loss<1.2dB<1.3dB<1.3dB<5.5dB
Monitoring power range-50 dBm ~+25dBm
Working temperature range-10℃~60℃
Working humidity range5%~95% no condensation
Storage temperature-40℃~85℃
Equipment dimension

CL-OTN-3900 1RU: 442(W)×350(D)×44(H)mm 

CLOLP-xxx-L1RU:442 (W)×250 (D) ×44 (H)mm 

Network managementSupport multi-kinds of graphical interface network management, such as SNMP, Web
Optical interfaceLC/UPC
Power supplyAC: 90 ~ 260V or DC:  -72~ -36  V (support 1+1 power input backup)
Typical power consumptionFull configuration<30w
Heat dissipationFan cooling
MTBF>100000 hours
OBP Optical Bypass Protection System
The OBP optical bypass protection subsystem (Bypass) is an intelligent optical path switching system. It belongs to the physical layer equipment and is applied to pure optical network environment. It can automatically identify the power supply status and optical signal output status of network nodes. When the local optical equipment fails (including power interruption, hardware or software failures), it can instantaneously switch to the bypass optical path, and the communication line will bypass the local equipment (i.e. the fault node), thus avoiding the total resistance obstacle caused by the fault node and ensuring the normal system connectivity.
FunctionParameter

lApplicable to all kinds of gateway equipment, such as DPI equipment, firewall, IPS, UTM, IDP, spam gateway, anti-virus gateway, special DDos equipment, special logic isolation equipment in all fields, etc.

lSupport power-off and power-on retention function: Bypass equipment’s power-off or power-on, does not affect the switching status of work routing to ensure the normal operation, and has hot-swap function.

lUnique power storage function to ensure that no .wrong switch occurs even when the bypass equipment itself is power off.

lAutomatic instantaneous switch to fault nodes without human intervention, switching time < 20ms.

lOBP card and network management card are independent of each other and have no influence on each other

lSupport multi-kinds of graphical interface network management, such as SNMP, Web

lSupport AC power 220V, DC power -48V, and 1+1 power input protection

CL-OTN-2900 1RU442 (W)×280 (D) ×44 (H) mm


Bypass-Unite
Product Specification
FunctionParameter
Working wavelength range850nm、1260nm ~ 1650nm
OBP typeOBPA (dual fiber 1+1 protection)OBPB (dual fiber 1:1 protection)
Switching time<20ms<20ms

Introduction loss

Cascade<3.5dB (typical 50%: 50% splitter)<1.5dB
Bypass<4.5dB (typical 50%: 50% splitter)<1.5dB
Monitoring power range-50 dBm ~+23dBm
Working temperature range-10℃~60℃
Working temperature range5%~95% no condensation
Storage temperature-40℃~85℃
Equipment dimensionOSP2900 1RU:442(W)×280 (D) ×44 (H) mm
Network managementSupport multi-kinds of graphical interface network management, such as SNMP, Web
Optical interfaceLC/UPC
Power supplyAC: 90 ~ 260V or DC:  -72~ -36 V(support 1+1 power input backup)
Typical power consumptionFull configuration<25w<>
Heat dissipationFan cooling
MTBF>100000 hours


Quality inspection
●100% of products pass initial test, final test and factory inspection.

●3-step quality control management process.

●100% complete implementation of customer order quality requirements.

●100% guarantee of customer product data information security.

Quality certification

Please contact us to download the certification certificate.

Quality certification

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

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