Recently China Mobile announced 2021-2022 ordinary optical cable collection winning candidates, many listed companies were shortlisted. In view of the size of the scale, the price is significantly increased, and the impact of IPv6, dual gigabit network construction, the demand of fiber optic cable is growing, and the industry will become a consensus. # 通信 #
The construction of each generation of communication facilities will pull the demand for fiber optic cables. With 5G, data center, edge computing, Internet of Things, smart cities, etc., will further increase traffic demand.
According to ReportLinker data, it is expected that the annual compound growth rate of Global fiber optic cable will reach 12.26%, and the industrial growth space is reopened. # 光纤 光 光 #
The fiber optic cable is a communication cable consisting of two or more glass or plastic fiber cores, which are located within the protective coating. The outer casing covered by the plastic PVC external casing. Signal transmission along the internal fiber is generally infrared.
Source: Long Fly Fiber Book
From the perspective of specific communication networks, the fiber optic cable consists of three major parts. The access network is mainly fixed access network, ftth; carrier network is used to integrate access network side data and information and transmit, in front, middle, and return have a large fiber optic cable demand; core network, responsible for data Processing and routing.
Optical fiber transmission has a low transmission loss, frequency bandwidth, strong anti-interference ability, can be widely applied to the access network of telecommunications, carrying network, core network, and internal interconnection of data center, etc. Or the lack of infrastructure.
The optical cable consists of a cable core and a sheath. The cable core determines the transmission characteristics of the cable, depending on the number of fibers contained, it can be divided into single core / multi-core. The sheath is made of polyethylene / polyvinyl chloride and aluminum belt / steel strip to protect the cable core, with better compressive capacity, sealing, and corrosion resistance.
Data Source: Public Information, Walking Treatment
Optical fiber optic cable industry chain
Upstream: Optical Fiber Preform Raw Material
Optical Fiber Prefabricant Manufacturers Made Optical Prefabricated Rods by purchasing raw materials, corresponding raw materials include special gases, high purity silicon materials, and the like.
Optical fiber preform raw material quartz casing manufacturers include Germany’s Heraeus, QSIL, and Momentive and JapanThis TOSOH is currently still difficult to produce.
Chemical gas high purity tetrachloride silicon still polysilicon production waste is purified, and the technology has been monopolized by Japan and Germany, and domesticization is progressing.
High-purity tetrachloride is currently including Beijing Gujing Hui and Wuhan Yunjing Fei can be produced.
Clamps, domestic manufacturers, including Philiph, Beijing Jiu Zhiguang, Golden Grain quartz and other companies.
Middle reaches: Fiber optic cable manufacturing
In general, the survivability of the mid-resection fiber optic cable manufacturing is divided into: fiber preform (light rod): fiber: optical cable \u003d 7: 2: 1.
Data Source: Deloitte Consultation
Optical Fiber Preform
Optical Fiber Preform is a fiber optic cable industry chain The highest value of the added value is the most important part of the fiber optic technology, accounting for about 70% of the industrial chain profit. The technical threshold of the link is high, and large capital investment is required, and it is known as the \”Crown of Crown\” by the industry.
The price of optical fiber preforms greatly affects the price trend of fiber optic cable, the largest gross profit margin, is a business track that is struggling to manufacture manufacturers.
Optical fiber preform production process is two steps, and the rod core is produced as a key step. The current commercial production of fiber prefabricated rods have developed into a \”two-step method\”, the first step is to produce mandrels, the second part is an outsourcing layer on the mandrel to make a prefabricated rod.
The mandrel determines the transmission characteristics of the optical fiber, and the outer classes determine the fiber manufacturing cost.
The main solution of mandrel technology includes how to accurately implement the design refractive index distribution curve, and how to improve the deposition rate for more core layers.
The manufacturing process of the mandrel has four main types: vapor phase axial deposition (VAD), external autodynaria deposition (OVD), improved vapor deposition method (MCVD) and plasma chemical vapor deposition Method (PCVD).
Among them, the MCVD mode is simple; OVD / VAD is low to raw material purity, effective control of cost; PCVD raw material utilization is high, refractive index distribution is more accurate. The short-term industry is still in the inventory stage, and the OVD / VAD process can help companies reduce production costs.
PCVD / MCVD / VAD / OVD Manufacturing Technology Schematic:
Source: China Electronic Network
From the mandrel manufacturing competition pattern, the link has passed I have been monopolized by foreign companies, and in the early years, my country’s light stick is completely out of order.
There are nearly 10 companies in China to master the skills. The market share of the market share, the sum of the market share of the top five manufacturers in Flying, Hengtong, Zhongtian, Futong and the bonfireMore than 93%.
Domestic fiber faucet manufacturers have jointly cooperated with foreign companies to enter fiber-optic prefabricated rod production areas: Changfei and Dutch Drak cooperation, using PCVD + RIC / ODD technology, Hengtong Optoelectronics and Zhongtian Technology respectively cooperate with Japanese companies, The VAD + OVD process is used, and the bonfire communications uses PCVD + RIT, PCVD + OVD process. Domestic fiber optic cable manufacturers have decreased in less than 30 years ago, and the competitiveness of companies with \”stick cable\” full industry chain ability is constantly enhanced, and the industry concentration trend is obvious.
Optical Fiber Manufacturing
In recent years, domestic manufacturers have broken through two aspects in terms of optical fiber production: one is the light rods, the second is Upstream raw materials include quartz casing, high purity tetrachloride, high purity tetrachloride, and laminated.
Optical fiber manufacturing manufacturers use fiber prefabricated wire drawing to fabricate fibers, including steps such as coating and wire, gross profit margin is approximately 25%.
my country’s light rod production capacity is concentrated to the leader, there are many manufacturers with brushed technology, while leading manufacturers have almost all integrated production capacity.
Data Source: Downtown
Downstream – Optical Cable Manufacturing
The downstream cable enterprise processing is mainly to protect the fiber And finally sold to the application client, gross profit margin is approximately 6%.
The downstream of my country’s fiber optic cable is mainly the telecom market and the numerical market. The optical cable is ultimately purchased by customers such as operators, radio and television, data centers. The three operators are dominant, accounting for 80% of total demand.
Operator chamber conducts 1-2 fiber collection, collecting bids and prices in the marketing of the market are the main ways to track the fiber market.
According to the application scenario, the operator purchases the fiber optic cable is mainly used to meet the new construction needs such as FTTH network, 5G bearer network, optical fiber directly, and the replacement of old optical cables, and there are overseas markets and some non- Operator market demand.
Data Source: Financial Securities
The development of fiber optic cable is mainly due to 5G, cloud computing, Internet of Things, etc. The construction of the field. Recent Industry and Information Technology, the Central Netcom Office has repeatedly requested continuous improvement of IPv6 network capabilities, accelerating organizations to carry out the pilot work of IPv6 technology innovation and integration applications, and multi-provinces and cities are also focus on promoting IPv6 traffic scale.
\”Double Gigabit\” Network Collaborative Development Action Plan (2021-2023) \”\” \”\” \”\” \”The year is basically a \”double Gigabit\” network infrastructure that fully covers urban areas and conditional towns, and realizes fixed and mobile networks generally have \”Gigabit to home\” capabilities.
Under the relevant policy driver, operators will continue to promote network infrastructure construction in the next few years, and the fiber optic cable is the foundation composition of the optical network physical layer, which is expected to usher in a new round of development opportunities.