What Is The Basic Status Of Different Types Of Optical Fiber?

In multimode fiber, the core diameter is 50 μm and 62.5 μm, roughly the thickness of a human hair. The diameter of single-mode fiber core is 8μm~10μm, and 9/125μm is commonly used. The core is surrounded by a glass shell with a lower refractive index than the core, often called a cladding, which holds light in the core. The outer layer is a thin plastic sheath or coating that protects the cladding. Optical fibers are usually bundled and protected by sleeves. The core is usually a double concentric cylinder with a small cross-sectional area made of quartz glass. It's brittle and breaks easily, so you need an outer layer of protection.

Note: 9/125μm means the core is 9μm and the coating is 125μm. 9/125μm is an important characteristic of single-mode fiber. 50/125μm Indicates that the fiber core is 50μm, and the cladding is 125μm and 50/125μm. This is an important characteristic of multimode fiber.

Among them, the BRICS Fiber Optic Cable Project is an undersea fiber optic cable project directly connecting the five BRICS countries. Construction began in early 2014 and production began in mid-2015. The total length of the project is 34,000 km, of which about 24,000 km is the length of the submarine optical cable directly connecting brics countries.

In 2013, global 100G fiber revenue is expected to break through $1 billion for the first time. The firm analyzed financial results for the global optical network market in the first quarter of 2013 and found some trends, including a disappointing trend that overall market growth remained difficult, with only Japan's Fujifilm Making a profit year over year.

While first-quarter declines in fiber optics are not uncommon, the decline is worrisome because it was the fifth consecutive quarter of decline and the lowest quarterly revenue in six years.

100G fiber is more optimistic, both sequential and year-on-year growth. In the first quarter of 2013, 100G fiber shipments increased 41% from the fourth quarter of 2012 and revenue increased 24% from the fourth quarter of 2012. On that basis, full-year revenue is expected to exceed $1 billion for the first time. In the first quarter of 2013, 20 suppliers sold 100G fiber, and more will join the market competition. Suppliers are cautiously optimistic, short-term orders are bullish, long-term orders are not optimistic.