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In recent years, the industry has been focusing on reducing the footprint
of fiber optic networks.
It can be said that around 2005, as fiber suppliers developed small bend radius (RBR) fibers, the trend towards smaller cables and hardware began to appear
.
Soon after the advent of these new optical waveguide designs, an international standard, ITU G657
, was developed to standardize.
Subsequently, as the fiber's tolerance for macro and micro bends increased, these "knotted" fibers began to allow for smaller cable designs
.
Small bend radius fiber is highly efficient
Macroscopic bending is a simple phenomenon
that is easy to understand.
ITU G657 specifies special optical loss specifications
at special bending radii for macroscopic bending properties.
However, some claim that the improved microbending performance comes from the fact that the main characteristics of the small bend radius result in smaller, higher-performance wiring
.
One way to actually analyze the difference between macrobends and microbends is to imagine wrapping an optical fiber around your finger, measuring fiber loss (macrobend), pressing a piece of sandpaper on the fiber and measuring the corresponding loss (microbending loss), and then comparing the differences
.
In these two cases, the underlying optical phenomena that cause signal loss are very different
.
When the optical cable is exposed to a low temperature environment, the material in the optical cable will tend to shrink and apply force along the length of the optical fiber, which will cause the microbending
of the optical fiber in the optical cable.
For example, the improved microbend tolerance of fibers with small bend radii can undoubtedly help cables withstand large temperature changes
.
Cable manufacturers around the world are taking advantage of this feature of small bend radius fibers, and their desire is to develop cables that can be used like copper cables – robust, small, practical, and easy for anyone to operate without damaging the fiber
.
To achieve this, innovations have also been made in the materials used in the manufacture of fiber optic
cables.
The improved bending performance of fibers with small bend radii promotes the use of new materials and new manufacturing techniques in cable manufacturing, resulting in smaller and lighter cable sizes
.
Together, these challenges can be solved to create a new generation of fiber optic cables
that are smaller and more resilient.
A major factor in small radius cables is patch cord and other direct-attached cables
.
In addition to the obvious benefit of being able to fit more cables in the same space, smaller cable sizes can speed up air flow because cables take up less duct space
.
As suppliers of active electronic components experiment with miniaturization and consolidation of electronic cabinets, the importance of this advantage will become even more apparent
.
In such electronic cabinets, heat gradually becomes an important issue
.
Normally, people think about airflow along copper cables, which itself generates heat, but as equipment cabinets become smaller and hotter, all aspects of airflow become important
.
Smaller direct-attach cables and jumpers have emerged
Smaller than you can imagine
.
This phenomenon may not be as obvious now, but for each decrease in the diameter of the circular cable, the space occupied by the cable (the area of the circle) will be correspondingly reduced
.
Therefore, a slight reduction in the diameter of the fiber optic cable can mean a significantly smaller
footprint.
Therefore, comparing a typical 2.
0 mm cable with a 1.
2 mm diameter cable, it is clear that although the cable diameter is not halved, the number of cables that can be installed in the same space (1 square inch) is almost three times
the original.
Late in the first decade of the 21st century, Telcordia released revision 2
for the widely used GR-409 direct-attach fiber optic cable standard.
Revision 2 includes a subcategory called "small" cables, allowing the production of lower strength cables
in accordance with the GR-409 standard.
Revision 2 lowers the stipulation for so-called small package mounting tensile strength, allowing fiber optic cables to withstand 9 pounds (40N) of mounting load instead of the standard installation load
of 22 pounds (100N).
At the time, it was widely believed that reducing strength was necessary to
produce increasingly small fiber optic cables.
Compared to cables rated at 22 lbs, cables rated at 9 lb of tensile load require installers to be more careful to avoid damage
to the cable.
However, some current cables based on small bend radius cables actually use materials, designs, and methods that make the cable smaller than the original 22 lb tensile installation load
specified in GR-409.
For example, 1.
2mm direct-attach optical cables are available now to support a rated installed load
of 30 pounds.
This means that a new cable with a diameter of 1.
2mm is 3 times stronger and will only take up a third of the space
compared to a 2.
0mm cable rated for small size.
As a result, it won't be long before data center managers and others will be able to install cables that are much smaller than ever before without passively choosing the GR-409's small package without reducing cable strength
.
Expect that in the near future, we will see hardware with smaller dimensions than ever before, which will enable denser and more compact cabling management while guaranteeing network reliability
.
In recent years, the industry has been focusing on reducing the footprint
of fiber optic networks.
It can be said that around 2005, as fiber suppliers developed small bend radius (RBR) fibers, the trend towards smaller cables and hardware began to appear
.
Soon after the advent of these new optical waveguide designs, an international standard, ITU G657
, was developed to standardize.
Subsequently, as the fiber's tolerance for macro and micro bends increased, these "knotted" fibers began to allow for smaller cable designs
.
Small bend radius fiber is highly efficient
Small bend radius fiber is highly efficientMacroscopic bending is a simple phenomenon
that is easy to understand.
ITU G657 specifies special optical loss specifications
at special bending radii for macroscopic bending properties.
However, some claim that the improved microbending performance comes from the fact that the main characteristics of the small bend radius result in smaller, higher-performance wiring
.
One way to actually analyze the difference between macrobends and microbends is to imagine wrapping an optical fiber around your finger, measuring fiber loss (macrobend), pressing a piece of sandpaper on the fiber and measuring the corresponding loss (microbending loss), and then comparing the differences
.
In these two cases, the underlying optical phenomena that cause signal loss are very different
.
When the optical cable is exposed to a low temperature environment, the material in the optical cable will tend to shrink and apply force along the length of the optical fiber, which will cause the microbending
of the optical fiber in the optical cable.
For example, the improved microbend tolerance of fibers with small bend radii can undoubtedly help cables withstand large temperature changes
.
Cable manufacturers around the world are taking advantage of this feature of small bend radius fibers, and their desire is to develop cables that can be used like copper cables – robust, small, practical, and easy for anyone to operate without damaging the fiber
.
To achieve this, innovations have also been made in the materials used in the manufacture of fiber optic
cables.
The improved bending performance of fibers with small bend radii promotes the use of new materials and new manufacturing techniques in cable manufacturing, resulting in smaller and lighter cable sizes
.
Together, these challenges can be solved to create a new generation of fiber optic cables
that are smaller and more resilient.
A major factor in small radius cables is patch cord and other direct-attached cables
.
In addition to the obvious benefit of being able to fit more cables in the same space, smaller cable sizes can speed up air flow because cables take up less duct space
.
As suppliers of active electronic components experiment with miniaturization and consolidation of electronic cabinets, the importance of this advantage will become even more apparent
.
In such electronic cabinets, heat gradually becomes an important issue
.
Normally, people think about airflow along copper cables, which itself generates heat, but as equipment cabinets become smaller and hotter, all aspects of airflow become important
.
Smaller direct-attach cables and jumpers have emerged
Smaller direct-attach cables and jumpers have emergedSmaller than you can imagine
.
This phenomenon may not be as obvious now, but for each decrease in the diameter of the circular cable, the space occupied by the cable (the area of the circle) will be correspondingly reduced
.
Therefore, a slight reduction in the diameter of the fiber optic cable can mean a significantly smaller
footprint.
Therefore, comparing a typical 2.
0 mm cable with a 1.
2 mm diameter cable, it is clear that although the cable diameter is not halved, the number of cables that can be installed in the same space (1 square inch) is almost three times
the original.
Late in the first decade of the 21st century, Telcordia released revision 2
for the widely used GR-409 direct-attach fiber optic cable standard.
Revision 2 includes a subcategory called "small" cables, allowing the production of lower strength cables
in accordance with the GR-409 standard.
Revision 2 lowers the stipulation for so-called small package mounting tensile strength, allowing fiber optic cables to withstand 9 pounds (40N) of mounting load instead of the standard installation load
of 22 pounds (100N).
At the time, it was widely believed that reducing strength was necessary to
produce increasingly small fiber optic cables.
Compared to cables rated at 22 lbs, cables rated at 9 lb of tensile load require installers to be more careful to avoid damage
to the cable.
However, some current cables based on small bend radius cables actually use materials, designs, and methods that make the cable smaller than the original 22 lb tensile installation load
specified in GR-409.
For example, 1.
2mm direct-attach optical cables are available now to support a rated installed load
of 30 pounds.
This means that a new cable with a diameter of 1.
2mm is 3 times stronger and will only take up a third of the space
compared to a 2.
0mm cable rated for small size.
As a result, it won't be long before data center managers and others will be able to install cables that are much smaller than ever before without passively choosing the GR-409's small package without reducing cable strength
.
Expect that in the near future, we will see hardware with smaller dimensions than ever before, which will enable denser and more compact cabling management while guaranteeing network reliability
.