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By goodvin | 18 May 2023 | 0 Comments

What is a Fiber Optic PLC Splitter? - Its classification and application

                       What is a Fiber Optic PLC Splitter? - Its classification and application

Fiber Optic PLC Splitter is also called "non-wavelength selective optical branching device". It is an optical fiber device used to realize the power splitting and redistribution function of optical signals in a specific band. It is one of the most important passive devices in optical fiber links. It is an optical fiber tandem device with multiple input ends and multiple output ends. M×N is often used to indicate that a splitter has M input ends and N output ends. As a core component of the FTTx network, the Fiber splitter is typically used in passive optical networks (PASSIVE Optical Network, PON) in two areas:  a. As a power distributor for downstream optical signals (1490nm and 1550nm) uses. b. as a combiner for uplink optical signals (1310nm).
1.Optical splitter principle of Fiber Optic PLC Splitter
Planar waveguide type is a micro-optical component type product. It uses photolithography technology to form optical waveguides on a dielectric or semiconductor substrate to achieve branching and distribution functions.

2.Common technical indicators of Fiber Optic PLC Splitter
a. Insertion loss
The insertion loss of the splitter refers to the number of dBs per output relative to the loss of input light
b. Additional losses
Additional losses are defined as the sum of optical power for all output ports and the number of dBs relative to the loss of optical power in the input
c. Spectrophotical ratio
The spectrophotical ratio is defined as the output power ratio of each output port of the optical splitter, and in the system application, the spectrophotometer ratio is indeed based on the amount of optical power required by the actual system optical node to determine the appropriate spectrophotial ratio (except for the average distribution), and the spectrophotometer's spectrophotical ratio is related to the wavelength of the transmitted light.
d. Degree of isolation
Isolation refers to the ability of one optical path of a light divider to isolate light signals in other light paths
In the above indicators, the isolation degree is more important for the optical splitter, in the practical system application often needs to isolate more than 40dB devices, otherwise it will affect the performance of the whole system. In addition, the stability of optical splitter is also an important indicator, the so-called stability refers to the external temperature changes, other devices in the operating state of change, the optical splitter's spectrometer and other performance indicators should remain basically unchanged. In addition, uniformity, return loss, directionality, and PDL all play a very important role in the performance indicators of optical splitters.

3.Fiber Optic PLC Splitter classification
It can be used as a separate device in OLT nodes, optical distribution points, user access points, or in other bureau wiring facilities, optical distribution points and user access point facilities (all-in-one design or pluggable) for use, the specific application types are as follows:

a. Bare Fiber Steel Tube Fiber Optic PLC Splitter

b. Fan-out Fiber Optic PLC Splitter

c. ABS box type Fiber Optic PLC Splitter

d. Pigtail type Fiber Optic PLC Splitter

e. Plug-in Fiber Optic PLC Splitter

f. Tray type Fiber Optic PLC Splitter

g. Rack-mounted Fiber Optic PLC Splitter

4. Application scene of Fiber Optic PLC Splitter
Optical splitters are commonly used in optical line terminals and optical network terminals of passive optical networks space. Broadband Passive Optical Network (BPON), Passive Optical Network (GPON), Ethernet Optical Network (EPON), 10G Ethernet optical network (EPON) and 10G passive optical network (GPON) technology will be made in the network system Use a light splitter. In a passive optical network, only one optical splitter may be used, or multiple optical splitters may be used. The Fiber Splitter is concentrated to split the optical signal. Centralized distribution of optical splitters is generally used in user concentration Distributed applications. Sometimes, the optical splitter can also be placed in the central office for splitting. In this case, it needs to be in the middle Deploy fiber optic cables between the central office and each user.
The Fiber Optic PLC Splitter app shows the scenario:
A. Application of PLC Splitter products in GPON:

B. Application of PLC Splitter products in FTTX:
With the wide application of FTTH network, in order to serve more users, people's demand for optical splitters is getting higher and higher. Therefore, Fiber PLC Splitter has become a popular optical splitter in FTTH applications with its advantages of multiple number of splits and uniform spectrosometry.

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