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 Feature			Product 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 (W)×350 (D) ×44 (H)mm
			CLOLP-xxx-L 1RU：442 (W)×250 (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
Function	Parameter
Working wavelength range	1260nm ~ 1650nm
OLP type	OLP-1:1	OLP-1+1	OLP-1-1	OLP-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 range	5%~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 management	Support multi-kinds of graphical interface network management, such as SNMP, Web
Optical interface	LC/UPC
Power supply	AC: 90 ~ 260V or DC: -72~ -36 V (support 1+1 power input backup)
Typical power consumption	Full configuration<30w
Heat dissipation	Fan 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.
Function			Parameter
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 1RU： 442 (W)×280 (D) ×44 (H) mm

Product Specification
Function		Parameter
Working wavelength range		850nm、1260nm ~ 1650nm
OBP type		OBPA (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 range		5%~95% no condensation
Storage temperature		-40℃~85℃
Equipment dimension		OSP2900 1RU：442(W)×280 (D) ×44 (H) mm
Network management		Support multi-kinds of graphical interface network management, such as SNMP, Web
Optical interface		LC/UPC
Power supply		AC: 90 ~ 260V or DC: -72~ -36 V(support 1+1 power input backup)
Typical power consumption		Full configuration<25w<>
Heat dissipation		Fan cooling
MTBF		＞100000 hours