Fiber Optical Splitter For Split Configurations

The fiber optical splitter, also known as beam splitter, is optical fiber tandem device with many input terminals and many output terminals, especially applicable to a passive optical network to connect the MDF and the terminal equipment, achieving the branching of the optical signal.

Fiber optic splitters enable a signal on an optical fiber to be distributed among two or more fibers. Since splitters contain no electronics nor require power, they are an integral component and widely used in most fiber optic networks. For example, a 1X4 LC type equal splitting ratio fiber optic splitter can split the fiber optic light signal into four equal 25% parts and sent to the 4 different channels, LC is the connector type on the splitters. Fiber optic splitter key parameters include the optical loss, splitting ratio, isolation, PDL, etc.

Fiber Optic Splitter Features:
Single Mode, multimode, and PM fiber types;
Multiple port configurations, custom length and cable diameters;
Various splitting ratios, 50:50 to 1:99;
Tube type or Box type, PLC fiber optic splitters or Fused fiber optic splitters;
PC, UPC, and APC fibre optic connectors;
Available with FC, SC, ST, LC and MU connectors.

Types
According to the optical splitter principle, it can be divided into FBT Splitter (Fused Biconic Tapered) and PLC Splitter (Planar Lightwave Circuit).

FBT Coupler, based on the traditional technology, making two (two or more) fibers removed the coating layer gather in a certain way, stretched to both sides under the heating zone at the same time. Form a double cone’s special waveguide structure, finally for getting a different splitting ratio, via controlling length of the fiber torsion angle and stretch. FBT splitters are widely accepted and used in passive networks, especially for instances where the split configuration is smaller (1×2, 1×4, etc). With the development of the technology, FBT splitters can be deployed in a cost- effective manner.

PLC Splitter is a micro-optical element using photolithographic techniques to form optical waveguide at medium or semiconductor substrate for realizing branch distribution function Technical Index.

With the latest technology, PLC splitters offer a better solution for applications when larger split configurations (1×16, 1×32, 1×64, etc) are required. To achieve this, waveguides are fabricated using lithography onto a silica glass substrate, which allows for routing specific percentages of light. As a result, PLC splitters offer very accurate and even splits with minimal loss in an efficient package.

FBT Splitter Compared With PLC Splitter
FBT Coupler are mature technology types, it is low cost and easy to make, but fused fiber optic splitters optical loss are sensitive to wavelength and this is a big disadvantage. PLC fiber optic splitters are small size and wide working wavelength, which are more reliable and suitable to use in passive optical network fiber optic splitting.

As the rapid growth of FTTx worldwide, the requirement of larger split configurations for these networks is increasing. Since the performance benefits and overall low cost of plc splitter, which serves mass subscribers, becomes the ideal solution for these types of applications currently.

PLC Splitter As My Know

The fiber optical splitter, also called beam splitter, is one of the most important passive devices in the optical fiber link. It is a fiber optical tandem device with many input terminals and output terminals, especially applied to a passive optical network to connect the MDF and the terminal equipment, to achieve the branching of the optical signal. There are two kinds of fiber splitters that are popularly used: One is FBT coupler (Fused Biconical Taper) and the other is PLC splitter (Planar Lightwave Circuit) . Today I would like to introduce you the PLC splitter.

PLC Splitter, based on silica optical waveguide technology and precision aligning process, dividing a single/dual optical input(s) into multiple optical outputs uniformly, which is denoted 1×N or 2×N. Nowadays, PLC splitter is widely applied in FTTX developments, PON networks, CATV links and optical signal distribution, meets these various application requirements in different environments. PLC Splitter offers superior optical performance, high stability and high reliability, excellent uniformity over a wide wavelength range from 1260nm to 1620nm and working in temperature from -40C to +85C. The PLCS devices have standard configurations of 1×4, 1×8, 1×16 and 1×32 configurations, as well as customized structures of 2×8, 2×16, 2×32 and 2×64.

Structure
PLC splitters contain of three main parts: an input fiber array, a planar light-wave chip, and an output fiber array. All three PLC splitter components have to be very precisely aligned so that we could guarantee the best possible transmission characteristics: low insertion loss per channel (minimally exceeding the theoretical values), low back reflection loss, consistency and very high uniformity of transmission parameters per channel within complete spectrum of transferred optical signal wavelengths and for all states of polarization.

Advantage and Disadvantage:
PLC Splitter advantage: Loss is not sensitive to the wavelength of the transmitted , to meet the transmission requirements of different wavelength, spectral uniformity, the average signal assigned to the user, compact structure, small volume, low cost of more points, the more obvious cost advantage.

PLC Splitter disadvantages: the device fabrication process complexity, high technical threshold.

The PLC Splitters are key components used in FTTx networks. Ingellen supplies the PLC splitters including 1XN to 64 and 2XN to 64 types, they are with a wide range of working wavelength for different applications. The PLC splitter can be with optional various kinds of connectors and cable length, they feature compact size and very good optical performance. All products meet GR-1209-CORE-2001 and GR-1221-CORE-1999 requirements. More, Ingellen can customize optical splitter to suit your exact conditions.

SFP Transceiver And SFP Plus Transceiver For Networking System

As the continuous increasing of the transmission capacity, determined the optical fiber communication become the major means of transmission in the modern telecommunication network system. Both sfp(small form-factor pluggable) and sfp plus (SFP+)transceivers are widely used in this field. But how much do you know about them?

SFP Transceiver is a compact optical transceiver used in optical communications for both telecommunication and data communications applications, which are designed to support SONET/SDH, Gigabit Ethernet, Fiber Channel and other communications standards.

SFP Transceivers can be acquired with a variety of receiver and transmitter types. Users can choose the right SFP transceiver for each fiber optic link they are deploying to provide the required reach depending on the type of optical fiber they are using (Multi Mode or Single Mode Fiber). SFP transceivers are available in several different categories including 850 nm 550m MMF (SX), 1310 nm 10 km SMF (LX), 80 km (ZX), 120 km (EX or EZX), CWDM and DWDM. SFP transceivers are also available with a copper cable interface to connect to unshielded twisted pair networking cable. The copper transceiver can be installed into optical SFP slots enabling an optical Ethernet port (1000Base-X) to be converted into a copper Ethernet port (1000Base-T) either in the field or in production.

10G Ethernet products are coming to fit the increasing demand for bandwidth in fiber optic technology today . While, SFP plus is the most popular 10G fiber optic transceiver currently. It is widely used for 10Gbit/s data transmission applications like data center, enterprise wiring closet, and service provider transport applications.

SFP plus is the upgraded version of the former SFP transceivers (also called MINI GBIC), with higher data rate and new industrial standards. SFP+ is with more compact size compared with the former 10G X2 and Xenpak transceivers, it has greater ability for density installations. 10G SFP+ is ideally suited for datacom and storage area network (SAN/NAS) applications based on the IEEE 802.3ae and Fiber Channel standards, Fiber Channel 10G, 8.5G, 4.25G, 2.125G, 1.0625G, 10G BASE- SW/SR/LR/ER, 1000 Base-SX Ethernet.

Digital diagnostic functions is built in the SFP Plus transceiver, the power consumption is always less than 1W and its excellent EMI performance allow system design with high port density. This is an green product which compliant the RoHS and it will certainly replace the SFP Transceiver Module in next few years.

The SFP+ module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The SFP plus module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mmof standard FR4 with one connector.