Optical Line Protection (OLP) system is a new optical line protection subsystem developed with advanced technology of dynamic and synchronous optical switches. When communication quality is lower or equipment breaks down due to accidental fracture or bigger loss of optical fiber in the optical transmission line, the OLP system can switch the primary line to the secondary line within a short time, to ensure normal operation communication of line, which effectively prevent fiber or equipment fault and shorten the recovery time from hours to milliseconds.



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Optical Line Protection switch provides both Manual and Automatic switching mode. In Manual mode, the system switches optical path only based on the commands from user.
In the Automatic mode, the system switches based on the power level detected and the preset threshold. Under automatic mode, the system can be set to be revertive or Non-revertive modes.
Under Revertive mode, the system switches back to the working path automatically after the fault condition is cleared. Under Non-revertive mode, the system does not switch back. The OLP models fit DWDM Series CH04, CH08, CH20 Chassis.
Performance Parameter
Parameter | 1:1 | 1+1 | Unit | |
OperatingWavelength | 1310±50nm,1550±50nm | nm | ||
OpticalPowerRange | +23~-50 | dBm | ||
Accuracy of OpticalPower | ±0.25 | dB | ||
DetectionLightPowerResolution | ±0.01 | dB | ||
Return Loss | ≥55 | dB | ||
Polarization Dependent Loss | ≤0.05 | dB | ||
WavelengthDependentLoss | ≤0.1 | dB | ||
Insertion Loss | Tx≤1.2dB RX≤1.2dB | Tx≤4dB RX≤1.2dB | dB | |
Switch Speed | <30 | <15 | ms | |
Dimension | 191(W) x253(D) x 20(H) | mm | ||
Environment | Operating Temperature | -10℃~+60℃ | ℃ | |
Storage Temperature | -40℃~+85℃ | ℃ | ||
RelativeHumidity | 5%~95% Non-condensing | |||
Power Consumption | ≤5 | W |
Ordering Information
Model | Function | SwitchingTime | Insertion Loss |
OLP1+1 | 1+1 Optical Line Protection, T1 and T2 are sent at the same time, select R1 or R2 to receive. | ≤15ms | Tx≤4dB RX≤1.2dB |
OLP1 : 1 | 1:1 Optical Line Protection, T1 Send andR1 Receiveor T2 Send andR2 Receive. | ≤30ms | Tx≤1.2dB RX≤1.2dB |
DWDM Series Chassis






DWDM Series Chassis is the foundation for deploying and managing the multi-service mixed-media solutions.
DWDM Series Chassis Optional | |||
CH04Chassis:482.5(W)x350(D) x44.5(H)mm | 1U19-inch chassis | 1 network management slot | 3 universal service slots |
CH08Chassis:482.5(W)x350(D) x89(H)mm | 2U19-inch chassis | 1 network management slot | 7 universal service slots |
CH20Chassis:482.5(W)x350(D) x222.5(H)mm | 5U19-inch chassis | 1 network management slot | 19universal service slots |
Power Consumption: 1U <120W, 2U<200W, 5U<400W | |||
Support SNMP, Web, CLI multiple network management modes | |||
Support dual power supply redundancy protection, Power supplysupport AC: 220V / DC: -48V optional |
DWDM Series Chassis support multiple service intermixing:
4x100G to 400GMuxponder | 4x25G to 100G Muxponder | 100G SOA Optical Amplifier Card |
2x100G to 200G Muxponder | 25G OEO | EDFA Card (Single fiber or dual fiber version) |
100G Transponder | 10G SFP+OEO | OLPOpticalLineProtection (Single fiber or dual fiber version) |
40G/100G OEO | Dispersion Compensation Module | 4/8/16/40/48Channel DWDM MUX/DEMUX, or OADM Card |