Detailed Explanation of the E2000 Fiber Optic Connector

The E2000 connector is a patented design developed by Diamond Company, known for its low insertion loss, easy connection, and auto-closing dust cap that minimizes contamination.

1. What Is an E2000 Connector?

The E2000 is a small-form-factor single-fiber connector featuring a push-pull connection mechanism with an integrated dust protection shutter.

• Appearance:
  The E2000 connector looks similar to an LC connector, with a compact square-shaped housing.
• Core Features:
  • Built-in spring-loaded dust shutter:
    When the connector is not mated, the shutter automatically closes to prevent dust, oil, or other contaminants from reaching the ferrule end face. This self-closing shutter design is the key feature that differentiates it from LC and SC connectors.
  • Push-pull mechanism:
    The connector can be inserted and removed simply by pressing the release latch, which makes handling easier—especially in high-density patch panels or optical distribution frames (ODFs).
  • Color coding:
    • Blue: PC/UPC polished type, used for standard communication applications.
    • Green: APC polished type (8° angled end face), designed for applications requiring ultra-low return loss, such as FTTH (Fiber to the Home) and CATV (Cable Television) networks.

2. Key Features and Advantages

• Excellent Dust Protection:
  The built-in automatic shutter significantly reduces contamination-related optical failures, enhancing network reliability.
• High-Density Compatibility:
  Similar in size to the LC connector, E2000 is ideal for space-limited environments, allowing high port density in ODFs, transceivers, and switches.
• Low Insertion and Return Loss:
  Precision manufacturing ensures consistent optical performance, with typical insertion loss ≤0.2 dB and return loss ≥60 dB (APC).
• User-Friendly Push-Pull Design:
  Easy insertion and removal without rotation; prevents accidental disconnection or fiber damage in densely packed panels.
• Laser Safety Protection:
  The shutter also provides a physical barrier against laser radiation, reducing the risk of accidental eye exposure.

3. Main Application Scenarios

• FTTH (Fiber to the Home):
  One of the most common applications. Many optical network terminals (ONTs) and optical line terminals (OLTs) from leading suppliers like Huawei use E2000/APC interfaces. The optical wall outlet in many homes may feature a green E2000/APC connector.
• Data Centers:
  Used for interconnection between servers, switches, and fiber patch panels, where high density and reliability are critical.
• Telecommunication Networks:
  Applied in access networks and metropolitan area networks (MANs) as patch or interconnect interfaces.
• CATV Networks:
  Due to its superior return loss performance, the APC-type E2000 is widely adopted in cable television systems to ensure signal quality.

4.Differences Between E2000 and Common Connectors Such as LC and SC

In simple terms, the E2000 connector can be regarded as an “upgraded version of the LC connector with an automatic dust shutter.”

5. Handling and Maintenance Guidelines

• Cleaning:
  Although the E2000 features a protective shutter, always inspect and clean the fiber end face before mating. The shutter protects the internal ferrule, but contamination can still occur during manufacturing or transport.
• Alignment:
  When connecting, ensure the connector is properly aligned with the adapter. Push gently until you hear a “click”, indicating that it is securely latched.
• Unplugging:
  Always press the release button before unplugging. Pulling the connector directly can damage the latch or fiber.
• Polish Type Matching:
  APC and UPC connectors are not interchangeable!
  • Green = APC (angled)
  • Blue = UPC (flat)
    Inserting an APC connector into a UPC adapter may damage the ferrule end face and degrade optical performance.