Fiber Optic Splitter Price and Type

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A uniform power splitter with a 1xN or 2xN splitting ratio configuration is most commonly deployed in a PON system

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 1xN vs 2xN
A uniform power splitter with a 1xN or 2xN splitting ratio configuration is most commonly deployed in a PON system so that the optical input power is distributed uniformly across all output ports. Here, the letter “N” refers to the number of output ports. It is because of this 1xN or 2xN configuration, the splitter enables to deploy a Point to Multi Point (P2MP) physical fiber network with a single OLT port serving multiple ONTs
2xN splitter is one more output than 1xN splitter. So, when to use it? Some operators prefer to include a certain level of redundancy in their network to ensure service even when a fiber is accidentally cut. Because the metro network is often constructed in a ring configuration, it makes sense to connect both ends of the fiber to the input of the splitter. In that case, the second splitter input leg will still be accessible from the other side if the connection to the first input leg fails. Thus, in general, the 1:N splitters are usually deployed in networks with a star configuration while 2:N splitters are usually deployed in networks with a ring configuration to provide physical network redundancy.
Centralized Split vs Cascaded Split
Splitters can be deployed in a centralized splitting or a cascaded splitting (also called distributed splitting) configuration depending on the desired network topology. Centralized split typically entails 1×16 and 1×32 split ratio counts. It provides the best optical budget in a single access point. The more centralized, the higher the port aggregation it is which makes network testing, troubleshooting and maintenance more easy and efficient in one location. In addition, it can also improve the utilization of splitter output ports. Cascaded split is possible in 1:4 and 1:8 or 1:2 and 1:16 split combinations. A cascaded split gives the advantage of a lower fiber count in smaller access points which enables PON port economization for sparser zones. Additionally, it can reduce cost in terms of horizontal optical fiber and optical fiber enclosures are much smaller due to lower port count. Thus, this arrangement is not only optimal in rural areas due to the low fiber count but also be the preferred solution in cities due to the smaller size of the network elements. In fact, it is not absolute. The optimal solution will differ also depending on the expected take rate: centralized splitters have a more efficient use of the splitter ports when the take rate is low.

•    PLC (Planar lightwave circuit) Splitter
•    FBT(Fused Biconical Taper) Splitter
 (Planar lightwave circuit) PLC Splitter
•    ABS Fiber Optic PLC Splitter(ABS Box Module)
•    Mini Fiber Optic PLC Splitter(Blockless)
•    19” Rack Mounted Fiber Optic PLC Splitter
•    Magazine type splitter
•    Bare Fiber PLC Splitter
•    Blockless PLC Splitter
•    ABS Box Module PLC Splitter
•    LGX Box PLC Splitter
•    Fan out PLC Splitter
•    Rack Mount PLC splitter
PLC Splitter for PON and FTTx networks
PLC Splitters play an important role in Fiber to the Home (FTTH) networks by allowing a single PON network interface to be shared among many subscribers. We offers a wide range of PLC splitters that can be configured with 1xN and 2xN. According to different applications, they can be designed with LGX, ABS box with pigtail, bare, blockless, rackmount package and so on. PLC Splitter

Product Description:

Planar lightwave circuit (PLC) splitter is fabricated using silica optical waveguide technology and offers a low cost solution for optical signal distribution. It has low insertion loss and polarization dependent loss, miniature size, wide operating wavelength and temperature range, super reliability, and excellent channel uniformity. Precision Micro-optics provides 1xN and 2xN series of splitters.


    Low insertion loss and PDL
    High channel number
    Compact size
    High reliability
    Wide operating wavelength and temperature range
    Excellent channel uniformity
    Telecordia GR-1221 and GR-1209

Specifications (1XN):   
     Port Configration     1X2    1X4    1X8     1X16     1X32    1X64
     Operating Wavelength (nm)     1260 ~ 1650
     Insertion Loss (dB)    Typical    3.5    6.8    10.2    13.1    16.2    20.2
         Max    4.0    7.4    10.5    13.5    16.9    21.0
     Channel Uniformity (dB)     0.5    0.7    1.0     1.4     1.8    2.0
     PDL (dB)     0.2    0.2    0.3     0.3     0.3    0.4
     WDL (dB)     0.3    0.3    0.3     0.5     0.5    0.8
     TDL (-40ºC ~ 85ºC )(dB)     0.5    0.5    0.5     0.8     0.8    1.0
     Dimensions for Fan-out (mm)     60(L)X7(W)X4(H)     60X12X4     80(L)X20(W)X6(H)
     RL (dB)     > 55dB
     Directivity (dB)     > 55dB
     Fiber Type     G652D
     Operating Temperature Range     -40ºC ~ 85ºC
Specifications (2XN):   
     Port Configration     2X2    2X4    2X8     2X16     2X32    2X64
     Operating Wavelength (nm)     1260 ~ 1650
     Insertion Loss (dB)    Typical    3.8    7.2    10.6    14.0    16.8    20.8
         Max    4.2    7.8    11.2    14.6    17.9    21.5
     Channel Uniformity (dB)     1.0    1.4    1.5     2.0     2.5    2.5
     PDL (dB)     0.2    0.2    0.4     0.4     0.4    0.5
     WDL (dB)     0.6    0.6    0.8     0.8     0.8    1.0
     TDL (-40ºC ~ 85ºC )(dB)     0.5    0.5    0.5     0.8     0.8    1.0
     Dimensions for Fan-out (mm)     60(L)X7(W)X4(H)    80(L)X12(W)X4(H)    80X20X6     
     RL (dB)     > 50dB
     Directivity (dB)     > 55dB
     Fiber Type     G652D
     Operating Temperature Range     -40ºC ~ 85ºC
How does a PLC Splitter work
Passive Optical Network (PON) splitters play an important role in Fiber to the Home (FTTH) networks by allowing a single PON network interface to be shared among many subscribers. Splitters contain no electronics and use no power. They are the network elements that put the passive in Passive Optical Network and are available in a variety of split ratios.
PLC Splitters are installed in each optical network between the PON Optical Line Terminal (OLT) and the Optical Network Terminals (ONTs) that the OLT serves. Networks implementing BPON, GPON, EPON, 10G EPON, and 10G GPON technologies all use these simple optical splitters. In place of an optical splitter, a WDM PONnetwork will use an Arrayed WaveGuide (AWG).

A PON network may be designed with a single optical splitter, or it can have two or more splitters cascaded together. Since each optical connection adds attenuation, a single splitter is superior to multiple cascaded splitters. One net additional coupling (and source of attenuation) is introduced in connecting two splitters together.

A single splitter is shown in the GPON network diagram below. Note that the splitter can be deployed in the Central Office (CO) alongside the OLT, or it may be deployed in an OutSide Plant (OSP) cabinet closer to the subscribers. A splitter can also be deployed in the basement of a building for a Multiple Dwelling Unit (MDU) installation (not shown).

                                                Splitter in GPON Network اسپلیتر ها در شبکه GPON
An interesting (and strange) fact is that attenuation of light through an optical splitter is symmetrical. It is identical in both directions.  Whether a splitter is combining light in the upstream direction or dividing light in the downstream direction, it still introduces the same attenuation to an optical input signal (a little more than 3 dB for each 1:2 split).
There are two basic technologies for building passive optical network splitters: Fused Biconical Taper (FBT) and Planar Lightwave Circuit (PLC). Fused Biconical Taper is the older technology and generally introduces more loss than the newer PLC splitters, though both PLC splitter and FBT splitters are used in PON networks.
A Fused Biconical Taper 1:2 optical splitter is diagrammed below. A Fused Biconical Taper (FBT) splitter is made by wrapping two fiber cores together, putting tension on the optical fibers, and then heating the junction until the two fibers are tapered from the tension and fused together. FBT attenuation tends to be a bit higher than attenuation from PLC splitters.

                                                                 Fused Biconical Taper Optical Splitter

A 1:8 Planar Lightwave Circuit (PLC) splitter is diagrammed in the figure below. A PLC splitter is made with techniques much like those to manufacture semiconductors, and these optical splitters are very compact, efficient, and reliable. A single 1:32 PLC splitter may be no larger than 1cm x 2 cm.

Planar Lightwave Circuit (PLC) Optical Splitter

The loss to be expected from a 1:8 splitter like the one diagrammed above is less than one dB greater than what would be expected from a perfect splitter, which has exactly 9 dB of loss (3dB for each 1:2 split). A good 1:32 PLC splitter has an attenuation in both directions of less than 17 dB or even 16 dB (a perfect 1:32 splitter would introduce 15 dB of loss).
PLC – Planar Lightwave Circuit Splitter
•    Suitable for multiple operating wavelengths (1260nm – 1650nm); unstinted.
•    Equal splitter ratios for all branches.
•    Compact configuration; smaller size; small occupation space.
•    Good stability across all ratios.
•    High quality; low failure rate.
•    Complicated production process.
•    Costlier than the FBT splitter in the smaller ratios.

FBT – Fused Biconical Splitter
•    The product is well-known and is easy to produce, thus reducing cost of production.
•    Splitter ratios can be customized.
•    Can work on three different operating bands (850nm, 1310 nm, and 1550nm).
•    Restricted to its operating wavelength.
•    Because of errors in equality insertion loss, the maximum insertion loss will vary depending on the split and increase substantially for those splits over 1:8.
•    Because an exact equal ratio cannot be ensured, transmission distance can be affected.
•    High temperature dependent loss (TDL). The operating temperature range is 23 °F- 167 °F. Any changes in temperature can affect the insertion loss.
•    The larger the split, the larger the encapsulation module.
•    Susceptible to failure due to extreme temperatures or improper handling.

Parameters    FBT Splitter    PLC Splitter
Fabrication Method    Two or more pieces of optical fibers are bound together and put on a fused-taper fiber device. The fibers are then drawn out according to the output branch and ratio with one fiber being singled out as the input.    Consists of one optical chip and several optical arrays depending on the output ratio. The optical arrays are coupled on both ends of the chip.
Operating Wavelength    1310nm and lSSOnm (standard); 850nm (custom)    1260nm -1650nm (full wavelength)
Application    HFC (network of fiber and coaxial cable for CATV); All FTIH applications.    Same
Performance    Up to 1:8 – reliable. For larger splits reliability can become an issue.    Good for all splits. High level of reliability and stability.
Input/Output    One or two inputs with an output maximum of 32 fibers.    One or two inputs with an output maximum of 64 fibers.
Package    Steel Tube (used mainly in equipment); ABS Black Module (Conventional)    Same
Input/Output Cable    Bare optical fiber; 0.9mm, 2.0mm, and 3.0mm    Same

Test Optical Splitters Loss With Optical Power Meter & Light Source
Optical splitters are usually used in passive optical networks (PONs) to distribute fiber to individual homes or businesses. There is something different between testing an optical splitter and a patch cable although both of them use optical power meter and light source to test. In this tutorial, we are going to talk about optical splitter loss testing with optical power meter and light source.

Loss Specifications of Optical Splitters

Insertion loss testing of optical splitter is very important to ensure compliance to the optical parameters of the manufactured splitter in accordance to the GR-1209 CORE specification. Here is a table of typical losses for splitters. Signal loss within a system is expressed using the decibel (dB) which is a measure of signal power attenuation.



1.Excess loss is the ratio of the optical power launched at the input port of the splitter to the total optical power measured from all output ports. It assures that the total output is never as high as the input.

2.Insertion loss is the ratio of the optical power launched at the given input port of the splitter to the optical power from any single output port. The insertion loss includes the splitting loss and excess loss.

How to Test Optical Splitter Loss With Optical Power Meter & Light Source

Before discussing the details of splitter loss testing, here is a fact that we should know about it. Attenuation of signal through an optical splitter is symmetrical which means it is identical in both directions. Whether an optical splitter is combining signal in the upstream direction or dividing signals in the downstream direction, it still introduces the same attenuation to an optical input signal. Thus, the principle of optical splitter loss testing is to follow the same directions for a double-ended loss test.

Now, we test the simplest 1x2 optical splitter as the picture shown below. First, attach a launch reference cable to the optical light source of the proper wavelength (some splitters are wavelength dependent), and then calibrate the output of the launch reference cable with the optical power meter to set the 0dB reference. Attach to the light source launch to the splitter and attach a receive launch reference cable to the output and the optical power meter, and then measure the loss. Similarly, to test the loss to the second port—move the receive launch cable to the other port and read the loss from the meter. For the other direction from all the output ports, we should reverse the direction of the test.



For other 1xN optical splitters, e.g. 1x32 splitter, this test method can also be used. Just set the light source up on the input and use the power meter and reference cable to test each output port in turn. But for upstream, we have to move the light source 32 times and record the results on the meter.

So, how about the 2X2 splitter? In this case, a lot of data are involved sometimes but it needs to be tested. We would need to test from one input port to the two outputs, then from the other input port to each of the two outputs. In the same way, we can test other 2xN splitters.

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Fiber Optic Splitter Price and Type

Fiber Optic Splitter Price and Type

A uniform power splitter with a 1xN or 2xN splitting ratio configuration is most commonly deployed in a PON system

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