Fiber optic connectors are unique. The optical pulses sent by fiber optic cables are not electrical signals, so the termination must be more precise. Instead of just allowing for metal to metal contact, fiber optic connectors must be perfectly aligned with the microscope glass to facilitate communication.
Dual fiber and single fiber:
Single fiber refers to one connector per port; However, dual fiber refers to two connectors per port
The three main components of a fiber optic connector are the metal ring, the connector body, and the coupling mechanism.
Metal ring - This is a thin structure (usually cylindrical) that actually holds glass fibers. There is a hollow center on the fiber to form a tight handle. Metal rings are typically made of ceramic, metal, or high-quality plastic and typically hold a chain of fibers.
Connector body - This is a plastic or metal structure that retains the sleeve and attaches it to the sheath and strengthens the optical cable itself.
Coupling mechanism - This is a part of the connector body used to secure the connector when it is connected to another device (switch, network card, bulkhead coupler, etc.). It may be a latch clip, a bayonet nut, or similar device.
Common types of fiber optic connectors:
1. SC connector
SC was developed by NTT Laboratories in the mid-1980s and was one of the first connectors to enter the market with the arrival of ceramic rings. The SC, sometimes referred to as the 'square connector', has a push-pull coupling end face and a spring-loaded ceramic sleeve. Originally used for gigabit Ethernet networks, it was standardized as the telecommunications standard TIA-568A in 1991, but due to cost reduction, its popularity has grown slowly. Due to its excellent performance, it has only been comparable to ST in fiber optics for over ten years. Thirty years ago, it remains the second most common connector for polarization maintaining applications. It is very suitable for data communication and telecommunications applications, including point-to-point and passive optical networks.
2. LC connector
Some people believe that it is a modern replacement of SC connectors; Its launch was not very successful, partly due to high licensing fees from inventor Lucent. Push pull connectors, in LC, utilize latches that are relative to SC locking plates and have smaller grommets, which are called small form factor connectors. Half of the footprint with SC connectors makes it highly popular in data communication and high-density patching programs. Due to its small size and locking function, it is highly suitable for use in densely populated racks/panels.
With the introduction of LC compatible transceivers and active network components, its stable growth in the FTTH field may continue.
3. FC connector
FC was the first fiber optic connector to use ceramic plugs, but unlike plastic SC and LC, it utilizes circular spiral fittings made of nickel plated or stainless steel. The end face of the connector relies on the correct insertion of the positioning card lock, which is then screwed into the adapter/socket of the threaded clamp used. Despite the additional complexity in * * and installation, it is still the preferred connector for precision measuring equipment such as OTDR products. Originally used for data communication and telecommunications applications, its usage has decreased since the introduction of SC and LC. These provide similar performance to FC, but both have cheaper components and connect faster. However, the clamp of the FC on the screw does not make it particularly effective in high vibration environments, ensuring that the spring-loaded collar is securely fitted.
4. ST connector
Shortly after the arrival of FC, the ST connector was developed by AT&T. At a glance, they can be misdiagnosed as each other and ST uses bayonets for decoration instead of threads. In recent decades, usage has declined for the same reasons as FC. In addition, it cannot be polished with angles, which limits its use in single-mode fiber and FTTH applications.
Dongguan Nabaichuan Electronic Technology Co., Ltd. was established in 2006, with the aim of "innovating product types and first-class quality control". We have a vast space in the fields of quick connectors, industrial connectors, power connectors, battery connectors, charging plugs, electrical connectors, high current connectors, Anderson power products, APP connectors, module connectors, battery connectors, and more. In the current year of 2017, we are going abroad to fight for the world.