Fiber optic closure, also known as fiber optic splicing closures, is a device used to provide space and protection for fiber optic cables spliced together. The fiber optic closure connects and stores optical fibers safely either in the outside plant or indoor buildings. It can provide protection for the fiber joint and the fiber cables since they have excellent mechanical strength and strong out shell, which ensures the joints are not damaged by the hostile environment.

Horizontal type fiber closure is like a flat or cylindrical case. This type of fiber splice closure is the most commonly used one in mounted aerials or buried underground. Horizontal type fiber optic closure usually contains one or more fiber splice trays to provide space and protection for fiber optic splices. Fiber splice trays used in different fiber optic splice closures may have different designs and fiber counts. The common fiber counts of flat fiber splice closure are 12 and 24 fibers.

Horizontal fiber optic splice closures are designed to be waterproof and dustproof. They have good adaptability and compression resistance, for they are commonly made of high tensile construction plastic. If attached to a pole or hung from wiring, these fiber splice closures need to be held firmly in place, to avoid damage from weather and wind.

The following picture shows a 96-fiber horizontal fiber optic splice closure. It has two input ports and two output ports providing space for 96 fiber splices. There are four standard 24-fiber splice trays stacked together inside the fiber optic splice closure.

When using the high-power EDFA, special attention should be  paid to the following: 

1. Do not plug or unplug the patch cords directly when it is powered on. Otherwise the output port  will be burned out, then the output power will be reduced, and the EDFA will not work. It is recommended to plug or unplug the patch cord under shutdown conditions. 

2. the following measures need to be taken if you have to plug or unplug the patch cords when the EDFA is powered on:A. reduce the EDFA output through the front panel buttonsB. reduce the EDFA output through the SNMP 

3. Please check about the patch cord carefully before installing it. If its end is dirty or damaged, it will also cause power reduction or no output.

GPON OLT complies with the standards of ITU-T G984/G.988, IEEE 802.3x, and FSAN. It is 1U height 19 inch rack mount device. It is appropriate to be deployed in compact room enviornment. The OLTs can be used for "Triple-Play", VPN, IP Camera, Enterprise LAN and ICT applications.

1. Stronger compatibility for Huawei, ZTE and other mainstream ONUs.

2. Easy configuration, plug & play, fast deployment.

3. Easy remote managemet based on EMS / WEB / Telnet / CLI / OMCI.

4. Dual power supply for backup.

5. L3 OLT provides Layer 3 dynamic routing protocols of RIP/OSPF.

PON network is a point to multiple points passive optical network. 

PON network consists of the Optical Line Terminal (OLT), Optical Distribution Network (ODN) and Optical Network Unit (ONU). PON is a typical passive optical fiber network, which means that (in the optical distribution network) does not contain any electronic devices and electronic power supplies, and ODNs are all composed of passive devices such as optical splitters (Splitters). source electronics.