Optical splitter pricing principle
2019-09-21 10:05:09
Spectral principle of optical splitter quote:
The optical splitters can be divided into two types: a fusion taper type and a planar waveguide type. The fusion taper type product is formed by welding two or more optical fibers sideways. The planar waveguide type is a micro-optical device type product. Photolithography technology forms an optical waveguide on a medium or a semiconductor substrate to achieve a branching function. The two types of spectroscopic principles are similar. They achieve different branching quantities by changing the evanescent field mutual coupling (coupling degree, coupling length) between optical fibers and changing the fiber fiber radius. On the contrary, they can combine multiple optical signals into one signal. Called a synthesizer. Fused-cone-shaped optical fiber coupler is a mainstream manufacturing technology because of its simple manufacturing method, low price, easy connection with external optical fiber, and its advantages such as mechanical vibration and temperature change.
Melt taper method is to apply two or more (or more than two) fibers that have been removed from the coating layer in a certain way, melted under high temperature heating, and stretched to both sides, and finally form a double cone in the heating zone. With a special waveguide structure, different splitting ratios can be obtained by controlling the twist angle of the optical fiber and the length of the stretching. Finally, the taper area is solidified on the quartz substrate with a curing glue and inserted into the stainless copper tube. This is an optical splitter. This process is not consistent with the thermal expansion coefficient of the cured rubber and the quartz substrate, stainless steel tube, the extent of thermal expansion and contraction in the ambient temperature changes are inconsistent, this situation is likely to lead to damage to the optical splitter, in particular, split the light The situation is even worse in the wild. This is the main reason why light shunts are easily damaged. Splitter production for more channels can consist of multiple splitters.
PLC splitters are fabricated using semiconductor processes (photolithography, etching, and development). The optical waveguide array is located on the upper surface of the chip, and the branching function is integrated on the chip, that is, a 1-way splitting is achieved on one chip; then, the multi-channel optical fiber arrays of the input end and the output end are respectively coupled at both ends of the chip. Package.
Compared with the melt pull cone type splitter, advantages of the PLC splitter include: (1) The loss is insensitive to the light wavelength and can meet the transmission requirements of different wavelengths. (2) Uniform light distribution, even distribution of signals to users. (3) Compact structure, small size, can be directly installed in the existing transfer box, without leaving a lot of space for installation. (4) There are many shunt channels for a single device, which can reach more than 32 channels. (5) Multi-way cost is low, and the more the number of branches, the more obvious the cost advantage.
At the same time, the main disadvantages of PLC splitters are: (1) The device manufacturing process is complex and the technical threshold is high. At present, the chip is monopolized by several foreign companies, and there are few domestic enterprises that can mass-package and produce. (2) Relative to the cost of the melt-pulling splitter, it is particularly disadvantageous in low-channel splitters.
In order to meet the needs of the market, the split fiber (split light) box is designed to be divided into direct-melt type, adapter-type optical fiber splitters and cassette-type, insert-type optical fiber splitters. Box materials are made of high quality cold-rolled steel, stainless steel or composite materials. It is mainly used for corridors or outdoor spotlights in FTTH access mode. It is suitable for primary or secondary spectroscopy of FTTH, and the secondary spectroscopic advantage is particularly obvious. And the bypass fiber connection function has been introduced.
Optical splitters offer direct-melt type compact size, configuration and diverse, especially for a split light mode, placed in corridors, weak electric wells and other occasions.
The optical splitters can be divided into two types: a fusion taper type and a planar waveguide type. The fusion taper type product is formed by welding two or more optical fibers sideways. The planar waveguide type is a micro-optical device type product. Photolithography technology forms an optical waveguide on a medium or a semiconductor substrate to achieve a branching function. The two types of spectroscopic principles are similar. They achieve different branching quantities by changing the evanescent field mutual coupling (coupling degree, coupling length) between optical fibers and changing the fiber fiber radius. On the contrary, they can combine multiple optical signals into one signal. Called a synthesizer. Fused-cone-shaped optical fiber coupler is a mainstream manufacturing technology because of its simple manufacturing method, low price, easy connection with external optical fiber, and its advantages such as mechanical vibration and temperature change.
Melt taper method is to apply two or more (or more than two) fibers that have been removed from the coating layer in a certain way, melted under high temperature heating, and stretched to both sides, and finally form a double cone in the heating zone. With a special waveguide structure, different splitting ratios can be obtained by controlling the twist angle of the optical fiber and the length of the stretching. Finally, the taper area is solidified on the quartz substrate with a curing glue and inserted into the stainless copper tube. This is an optical splitter. This process is not consistent with the thermal expansion coefficient of the cured rubber and the quartz substrate, stainless steel tube, the extent of thermal expansion and contraction in the ambient temperature changes are inconsistent, this situation is likely to lead to damage to the optical splitter, in particular, split the light The situation is even worse in the wild. This is the main reason why light shunts are easily damaged. Splitter production for more channels can consist of multiple splitters.
PLC splitters are fabricated using semiconductor processes (photolithography, etching, and development). The optical waveguide array is located on the upper surface of the chip, and the branching function is integrated on the chip, that is, a 1-way splitting is achieved on one chip; then, the multi-channel optical fiber arrays of the input end and the output end are respectively coupled at both ends of the chip. Package.
Compared with the melt pull cone type splitter, advantages of the PLC splitter include: (1) The loss is insensitive to the light wavelength and can meet the transmission requirements of different wavelengths. (2) Uniform light distribution, even distribution of signals to users. (3) Compact structure, small size, can be directly installed in the existing transfer box, without leaving a lot of space for installation. (4) There are many shunt channels for a single device, which can reach more than 32 channels. (5) Multi-way cost is low, and the more the number of branches, the more obvious the cost advantage.
At the same time, the main disadvantages of PLC splitters are: (1) The device manufacturing process is complex and the technical threshold is high. At present, the chip is monopolized by several foreign companies, and there are few domestic enterprises that can mass-package and produce. (2) Relative to the cost of the melt-pulling splitter, it is particularly disadvantageous in low-channel splitters.
In order to meet the needs of the market, the split fiber (split light) box is designed to be divided into direct-melt type, adapter-type optical fiber splitters and cassette-type, insert-type optical fiber splitters. Box materials are made of high quality cold-rolled steel, stainless steel or composite materials. It is mainly used for corridors or outdoor spotlights in FTTH access mode. It is suitable for primary or secondary spectroscopy of FTTH, and the secondary spectroscopic advantage is particularly obvious. And the bypass fiber connection function has been introduced.
Optical splitters offer direct-melt type compact size, configuration and diverse, especially for a split light mode, placed in corridors, weak electric wells and other occasions.
Advertising Cnc Router,High Quality Advertising Cnc Router,Advertising Cnc Router Details, CN
Shandong U-May CNC Technology Co., Ltd. , https://www.sesamecnc.com