FBT fiber coupler, also called fused biconical taper splitter, is a passive device that realizes optical power distribution based on fused drawn fiber. Its low additional loss and rapid customization capability enable flexible deployment in multiple scenarios. However, FBT splitter temperature stability limits its application in harsh environments.
1×2 Fiber coupler can be used in below applications:
Yingda is a Chinese fiber coupler manufacturer integrating R&D, production and sales. It is committed to providing customers with stable quality. No matter how the market changes, quality is always the first priority.
With long-term stable supply chain support and mature cost control, Yingda share the extra benefits with customers and promise to provide customers with the best quality and most competitive price and services, so that customers can stand out from many competitors.
Custom 850nm, 1310nm, 1490nm, 1550nm, single window, double window or triple window
Equal or unequal optical signal splitting 1/99 2/98 5/95 10/90 15/85 20/80 25/75 30/70 35/65 40/60 45/55 50/50
Number of output ports can be 2 channels, 3 channels, 4 channels, 8 channels, etc.
Fiber connectors can be SC LC FC ST interfaces
Cable length can be 1m, 1.5m, 2m, 2.5m,etc
Corning SMF-28e fiber optic cable can be 0.9mm, 2mm, 3mm diameter
Fiber coupler is to remove the coating of two or more fibers and bring them close together, then axially stretch them under high temperature molten state to form a tapered coupling area, and achieve a specific splitting ratio by controlling the stretching speed and torsion angle. Due to process limitations, a single taper can only produce ≤1×4 FBT splitters, and a higher number of channels requires cascading multiple 1×2 couplers and integrated packaging. Currently, the most in-demand product on the market is the 1×2 fiber coupler.
The following is the loss table of the 50 50 fiber coupler:
1X2 50 50 Fiber Coupler | ||
Quality standard | P Grade | A Grade |
Splitting ratio (%) | 1~50 | 1~50 |
Additional loss (typical) (dB) | 0.07 | 0.1 |
Insertion loss (maximum) (dB) | 3.4 | 3.5 |
Polarization sensitivity (dB) | 0.1 | 0.15 |
Operating wavelength (nm) | 1310±40,1550±40, 1585±40, or custom wavelength | |
Directivity (dB) | ≥55 | |
Operating temperature (℃) | -20 ~ +85 | |
Storage temperature (℃) | -40 ~ +85 | |
Fiber type | Corning single mode SMF-28,DS fiber or flexcore | |
Pigtail length (m) | 1 | |
Port | 1×2 or 2×2 | |
Dimensions (mm) | Package D,E,F,G | |
1×2 Unbalanced Splitter Coupling Efficiency in Optical Fiber:
Split Ratio | Insertion Loss | |
Quality standard | P Grade | A Grade |
40/60 | 4.4/2.5 | 4.6/2.8 |
30/70 | 5.6/1.8 | 6.0/2.0 |
20/80 | 7.4/1.1 | 7.7/1.3 |
10/90 | 10.8/0.6 | 11.6/0.8 |
5/95 | 14.2/0.4 | 14.6/0.5 |
2/98 | 18.5/0.2 | 19.0/0.3 |
1/99 | 21.0/0.2 | 21.5/0.3 |
With over 15 years of experience in fiber optic cables and fiber optic boxes, Yingda are proficient in creating high-quality fiber optic connectors and supporting products to meet various fiber access and fiber optic system upgrade solutions.
Here are the reasons why we stand out:
Fiber coupler is in hot selling, but with skilled workers and large productivity, our delivery is fast about 3-7days.
1x2 double-window fiber coupler has different losses according to different splitting ratios. For example, 50/50, maximum 3.4dB insertion loss, polarization sensitivity 0.1dB.
Due to mass production, high efficiency and lean cost control, Yingda 1x2 fiber coupler is very competitively priced, generally between USD0.9-USD1.2, with low loss, good stability, telecommunications standards, and independent packaging for easier sale and use.
The design life of a fused taper splitter is usually ≥5 years within the operating temperature range of -40℃～+85℃, and the reliability is verified by a 1000-hour accelerated aging test. If the package is optimized, such as a low thermal expansion coefficient substrate + special curing glue, the life can be extended to 8-10 years, and it can adapt to harsh temperature and humidity environments.
If FTTH application, Yingda recommended to use a low-cost 50 50 fiber coupler, which is highly economical for cascade expansion. If high-power pump beam combining is required (power tolerance of >1W), an asymmetric fiber coupler can be selected like 5 95, 10 90, 15 85, 20 80... 45 55, to prevent thermal damage to the fused taper area.
And furthermore, if in a laser-related application, recommended to use a polarization-maintaining splitter with an extinction ratio of >20dB to avoid polarization state distortion affecting gain efficiency.
Yingda has been specializing in the production of fiber connectivity products for 15 years, with quality assurance, competitive prices, and fast delivery. We understand the changes and dynamics of the international market and can better provide you with the best solution. We are your ideal optical fiber coupler partner.
The key factor affecting the service life of fiber coupler is packaging defects, followed by temperature fluctuations and complex splitters.
High productivity efficiency, skilled front-line operators and strict production control ensure timely delivery.
High-precision testing equipment and top industry quality control system ensure high quality standards.
Long-term stable supply chain and cost control that changes in line with market trends ensure the best price
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