LS-SM552G-80I 2.5Gbps SFP 1550nm 80km DOM Duplex LC SMF Optical Transceiver Module(Industrial)

Product Specifications

Key Design Benefits

• 80km Long-Haul Optical Link Budget: High launch power (-2 to +3 dBm) and -26 dBm receiver sensitivity provide a robust optical link budget suitable for 80km single-mode fiber links.
• Industrial-Grade Thermal Reliability: Operates reliably across -40°C to +85°C, making it suitable for outdoor wireless fronthaul nodes, utility networks, and industrial control cabinets.
• Real-Time DOM Diagnostics: Internal digital diagnostics interface (DOM) allows network administrators to monitor live transmit/receive optical power levels and thermal parameters.
• Hot-Pluggable SFP Form Factor: Enables module insertion and replacement in active telecom switches, routers, or SDH add-drop multiplexers without powering down the host system.
• Supply Chain Continuity: Offers network engineering and procurement teams a qualified industrial-grade 2.5G 1550nm 80km SFP option for long-haul infrastructure expansion.

Optical Architecture & Diagnostic Performance

The LS-SM552G-80I incorporates electro-optical subsystems directly within a compact metallic SFP enclosure to ensure signal integrity across long-haul 2.5G optical channels.

Transmitter & Receiver Subsystems

The transmitter incorporates a 1550nm DFB laser driver supplying -2 to +3 dBm optical output power. The receiver incorporates a PIN photodiode with an integrated trans-impedance preamplifier (TIA) providing -26 dBm receiver sensitivity and a -1 dBm overload threshold across 2.5Gbps data streams.

Digital Diagnostic Monitoring (DOM)

An SFF-8472 compliant MCU control unit monitors real-time operational parameters over a 2-wire serial interface. Monitored metrics include transmitted optical power, received optical power, laser bias current, module operating temperature, and internal supply voltage.

Mechanical & Interface Specifications

The LS-SM552G-80I is enclosed in a standard metal SFP housing featuring a latching bail mechanism for secure insertion and removal. The optical interface uses an industry-standard Duplex LC/UPC receptacle compatible with single-mode fiber (SMF G.652) patch cables. The module operates within an industrial temperature range of -40°C to +85°C and satisfies Class 1 laser safety requirements.

Target Applications

• SONET OC-48 / SDH STM-16 LR-2 Networks: Long-reach 80km 2.488 Gbps optical transport in telecommunication core switches and add-drop multiplexers (ADM).
• Wireless 5G / 4G Cellular Backhaul: Extended-temperature (-40°C to +85°C) 2.5G optical connectivity for outdoor baseband controllers and cellular transport nodes.
• Power Utility & Intelligent Transportation Systems (ITS): Ruggedized optical fiber communications for electric grid protection relays and roadside traffic backhaul networks.

LINK-PP LS-SM552G-80I Design Verification Checklist

When evaluating the LINK-PP LS-SM552G-80I for optical network expansion or secondary sourcing qualification, network engineers should verify the following parameters against their system specification:

• Data Rate & Protocol Matching: Confirm that target line cards support 2.5 Gbps or 2.488 Gbps data rates (SONET OC-48 / SDH STM-16 / 2.5GBASE Ethernet).
• 80km Fiber Link Budget Verification: Confirm single-mode fiber (SMF G.652) cable attenuation stays within the 24 dB optical link budget.
• Receiver Overload Protection: Ensure short-distance bench testing utilizes optical attenuators (minimum 10dB) to avoid exceeding the -1 dBm receiver overload threshold.
• Thermal Class Verification: Confirm that your deployment environment requires the extended industrial (-40°C to +85°C) operating temperature rating.