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Eols optical module

Eols optical module

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EOLS optical modules are small form-factor pluggable (SFP) transceivers designed for fiber optic data communication, supporting various wavelengths, data rates, and fiber types.

Overview

EOLS modules are SFP (Small Form-factor Pluggable) optical transceivers used for high-speed data transmission over fiber optic networks. They are designed for Gigabit Ethernet, Fiber Channel, and other serial optical communication protocols. These modules allow hot-plug capability, meaning they can be inserted or removed from network devices without powering down the system .

Types and Specifications

  1. ZTE EOLS-1312-10-D
    • Data Rate: 1.25 Gbps
    • Wavelength: 1310 nm
    • Fiber Type: Single-mode (SM)
    • Distance: Up to 10 km
    • Applications: Long-distance optical links in ZTE networking equipment
  2. EOLS-8512-02 Series
    • Data Rate: 1.25 Gbps
    • Wavelength: 850 nm
    • Fiber Type: Multi-mode (MM)
    • Distance: Up to 550 meters
    • Applications: Short-range optical links, Gigabit Ethernet 1000BASE-SX, Fiber Channel FC-PH-2

Key Features

  • Hot-pluggable SFP 20-pin connector for easy installation
  • Transmitter: Uses VCSEL (Vertical Cavity Surface Emitting Laser) for multi-mode modules or standard laser diodes for single-mode modules
  • Receiver: Integrated detector preamplifier with post-amplifier for signal conditioning
  • Digital Diagnostics: Monitors transmitted/received power, bias current, supply voltage, and temperature
  • Safety Compliance: Class 1 laser, compliant with IEC 60825 standards

Operational Notes

  • TX Fault and LOS (Loss of Signal): Open collector outputs that indicate transmitter faults or low received optical power; require pull-up resistors on the host board
  • TX Disable: Input to shut down the transmitter; logic levels define on/off states
  • Serial ID Interface: 2-wire interface (SDA/SCL) for module identification and diagnostics

Applications

EOLS modules are widely used in enterprise networks, data centers, and telecom infrastructure to provide reliable optical connectivity. Single-mode modules are suited for long-distance links, while multi-mode modules are ideal for short-range connections within buildings or campus networks. In summary, EOLS optical modules provide flexible, high-speed fiber connectivity with diagnostic capabilities, supporting both single-mode and multi-mode fiber applications depending on the model and wavelength .

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