Passive device is the component that doesn’t need to work under the external power supply. Including
Fiber optical connector (SC/UPC, FC/APC)
Fiber directional coupler / splitter
Optical add-drop multiplexer (OADM)
Wavelength division multiplexer/ Dense Wavelength division multiplexer (WDM / DWDM)
Fiber optical attenuator
Optical filter (band pass, band stop)
Fiber optical isolators and circulators (polarization-dependent, independent)
Optical polarization controller, fiber delay line (FDL), fiber grating
Active device is the component that needs to work under the external power supply. Including
Semiconductor light source (LD, LED, DFB, QW, SQW, VCSEL)
Semiconductor optical detector (PD, PIN, APD)
Fiber optical laser (OFL, single wavelength and multi wavelength)
Optical amplifier (SOA, EDFA)
Optical wavelength converter (XGM, XPM, FWM)
Optical modulator (EA)
Optical switch / router
Find related fiber optic products, such as patch cord, patch panel, splice closure, pigtails, fiber connectors, visit at http://www.jfcable.com
2014年4月24日星期四
How to achieve the conversion from electric signal to optical signal by media converter
Illustrate how to achieve the conversion from electric signal to optical signal by media converter
1.Outdoor cable
2.Media converter
3.Fiber optical patch cord
4.Fiber optical distribution frame (ODF)
5.Copper cable
6.Fiber optical patch cord
Steps are listed as below
1.Splice the outdoor cable and optical pigtails in the ODF, and lead the optical signal indoor
2.Connect the media converter and the ODF by the fiber optical patch cord, lead the optical signal into media converter
3.The optical signal is converted by media converter to electric signal, and lead out through Ethernet port on media converter
4.The active equipment can be connected on the media converter through Ethernet port
1.Outdoor cable
2.Media converter
3.Fiber optical patch cord
4.Fiber optical distribution frame (ODF)
5.Copper cable
6.Fiber optical patch cord
Steps are listed as below
1.Splice the outdoor cable and optical pigtails in the ODF, and lead the optical signal indoor
2.Connect the media converter and the ODF by the fiber optical patch cord, lead the optical signal into media converter
3.The optical signal is converted by media converter to electric signal, and lead out through Ethernet port on media converter
4.The active equipment can be connected on the media converter through Ethernet port
2012年8月23日星期四
Fiber optic jumpers
|
Fiber Optic Jumper
|
|
Fiber optic jumpers
What is fiber optic jumpers?
Fiber optic jumpers refers to a optical fiber directly link
the equipment and components
in the fiber optic networks, to facilitate the connection of equipment and
management. Used to do from device to optical fiber wiring link jump wire. Thick
layer of protection, which generally used in optical transceiver and the
connection between the terminal box.
The Structure of
the fiber optic jumper:
Fiber optic jumpers are similar with the coaxial cable,
but there are no mesh shield inside it.The center is light propagation glass
core. In the multimode optical fiber, the core diameter is 15 μ m ~ 50 μ m, roughly and quite
substantially with the thickness of
a human hair. And single-mode
fiber core diameter to 8 μ m ~ 10 μ m. Outside the core surrounded by a layer of
refractive index than core low glass envelope, in order to make optical fiber
to remain in within the core. To the outside is a layer of thin plastic coat to protect the cuff.
The classification of fiber optic jumpers:
According to the
transmission medium ,fiber optic jumpers can be divided into common silicon
base fiber single-mode and multimode optical jumpers, and others such as
plastic as transmission medium optical fiber jumper;
According to the joint
structure forms,fiber optic jumpers can be divided into: FC , SC, ST , LC, MTRJ, MPO , MU, SMA, FDDI and
E2000, DIN4, D4 and so on various forms. More common optical fiber jumpers can
also be divided into FC - FC, SC, FC - FC - LC, FC - ST, SC - SC, SC, ST,
etc.
Single-mode Fiber :
generally the color is yellow,
connector and protective sleeve are blue;
longer transmission distance.
Multimode Fiber:
generally the color is orange, some with
gray,
joints and
protection are beige or black;
transmission
distance is short .
  |
2012年8月5日星期日
Types of fiber optical patch cord
Types of fiber optical patch cord
Fiber patch cord (also known as fiber optic connectors), is a fiber optic connectors which are access to the optical module , various, and can not interoperate with each other.
SFP modules, with the LC fiber optic connector, while the GBIC connected SC fiber optic connectors.
The following are the detailed description of several commonly used fiber optic connectors in network engineering :?FC fiber optical patch cord: External strengthen the use of metal fastening method for the turnbuckle. Generally used in the ODF side (patch panel?SC fiber optical patch cord: connector to connect the GBIC optical modules, and its shell is rectangular ,fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches, the most widely used)?ST fiber optical patch cord: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For 10Base-F connections, the connectors are usually ST type commonly used in fiber optic patch panel?LC fiber optical patch cord: connected to the SFP module connector, it uses the convennient operate modular jack (RJ) latch mechanism . (Commonly used in routers)?MT-RJ fiber optical patch cord: Both send and receive ,the square fiber optic connectors, and one dual fiber transceiverST, SC connectors commonly used in general network. ST inserted after rotating a half weeks of a fixed bayonet, the drawback is easily broken; SC connector plug directly, easy to use, the drawback is easy to fall out; FC connectors general telecommunications network using a nut screwed onto the adapter. advantages of solid, anti-dust
The disadvantage is that the longer installation time. MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications in the telecommunications and data network systems.
Fiber modules: general are hot-swappable-GBIC fiber-optic interface and more for SC or ST type; SFP,that is , Small package-GBIC fiber optic LC type.
Fiber:1310 Single-mode:
SM:L, wavelength long distance LH wavelengths 1310, 1550
MM: SM wavelength 850
SX / LH can use SM or MM fiber
Pigtail connector marked, usually,we can see the FC / PC, SC / PC, etc., its meaning is as follows:
1 "/" the front part shows connector types of pigtail
"SC"is the standard rectangular connector, engineering plastics, high temperature, not easily oxidized advantages. Transmission equipment sidelight interface generally with SC connector
"LC" connectors and SC connectors are similar in shape, but smaller
"FC" is a metal connector, usually used in the ODF side, pluggable metal joints more often than plastic.
There are varieties signal connector, besides, MTRJ, ST, MU and so on,2 '/' behind that is the cross-section technology of fiber optic connectors, ie,polishing"PC" is the most widely used in the equipment of telecom operators , the joint cross-section is flat."UPC "attenuation is smaller than the "PC", generally used for devices with special needs, some foreign manufacturers ODF frame internal jump fiber with the FC / UPC, mainly to improve the indicators of the ODF device itself.
In addition, more applications in CATV broadcasting and early "APC" Model Pigtail head with the inclination of the face, and can improve the quality of television signals, mainly for the reason that the TV signal is analog optical modulation, when the connector coupling The surface is perpendicular to the reflected light returns along the original path.
The fiber refractive index profile of uneven will again return to the coupling surface, although the energy is very small but for the analog signal can not completely eliminate the noise, so the equivalent of a clear signal superimposed on a weak signal with a delay performance is ghosting on the screen. The pigtail headband inclination enable the incident light does not return along the original path. Generally there exist no problem in digital signal .
Fiber patch cord (also known as fiber optic connectors), is a fiber optic connectors which are access to the optical module , various, and can not interoperate with each other.
SFP modules, with the LC fiber optic connector, while the GBIC connected SC fiber optic connectors.
The following are the detailed description of several commonly used fiber optic connectors in network engineering :?FC fiber optical patch cord: External strengthen the use of metal fastening method for the turnbuckle. Generally used in the ODF side (patch panel?SC fiber optical patch cord: connector to connect the GBIC optical modules, and its shell is rectangular ,fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches, the most widely used)?ST fiber optical patch cord: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For 10Base-F connections, the connectors are usually ST type commonly used in fiber optic patch panel?LC fiber optical patch cord: connected to the SFP module connector, it uses the convennient operate modular jack (RJ) latch mechanism . (Commonly used in routers)?MT-RJ fiber optical patch cord: Both send and receive ,the square fiber optic connectors, and one dual fiber transceiverST, SC connectors commonly used in general network. ST inserted after rotating a half weeks of a fixed bayonet, the drawback is easily broken; SC connector plug directly, easy to use, the drawback is easy to fall out; FC connectors general telecommunications network using a nut screwed onto the adapter. advantages of solid, anti-dust
The disadvantage is that the longer installation time. MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications in the telecommunications and data network systems.
Fiber modules: general are hot-swappable-GBIC fiber-optic interface and more for SC or ST type; SFP,that is , Small package-GBIC fiber optic LC type.
Fiber:1310 Single-mode:
SM:L, wavelength long distance LH wavelengths 1310, 1550
MM: SM wavelength 850
SX / LH can use SM or MM fiber
Pigtail connector marked, usually,we can see the FC / PC, SC / PC, etc., its meaning is as follows:
1 "/" the front part shows connector types of pigtail
"SC"is the standard rectangular connector, engineering plastics, high temperature, not easily oxidized advantages. Transmission equipment sidelight interface generally with SC connector
"LC" connectors and SC connectors are similar in shape, but smaller
"FC" is a metal connector, usually used in the ODF side, pluggable metal joints more often than plastic.
There are varieties signal connector, besides, MTRJ, ST, MU and so on,2 '/' behind that is the cross-section technology of fiber optic connectors, ie,polishing"PC" is the most widely used in the equipment of telecom operators , the joint cross-section is flat."UPC "attenuation is smaller than the "PC", generally used for devices with special needs, some foreign manufacturers ODF frame internal jump fiber with the FC / UPC, mainly to improve the indicators of the ODF device itself.
In addition, more applications in CATV broadcasting and early "APC" Model Pigtail head with the inclination of the face, and can improve the quality of television signals, mainly for the reason that the TV signal is analog optical modulation, when the connector coupling The surface is perpendicular to the reflected light returns along the original path.
The fiber refractive index profile of uneven will again return to the coupling surface, although the energy is very small but for the analog signal can not completely eliminate the noise, so the equivalent of a clear signal superimposed on a weak signal with a delay performance is ghosting on the screen. The pigtail headband inclination enable the incident light does not return along the original path. Generally there exist no problem in digital signal .
Types of the fiber optic cables
In terms of the fiber optic cables, there are thousands of kinds to classify the types of fiber optic cables according to different sorting technique.
To know about the fiber optic cables’ type thoroughly, we have to master what is fiber optic cables at first.
An optical fiber cable is a cable containing one or more optical fibers. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed.
Now I share something more about the fiber optic Cable’s types:
A:
• OFC: Optical fiber, conductive
• OFN: Optical fiber, nonconductive
• OFCG: Optical fiber, conductive, general use
• OFNG: Optical fiber, nonconductive, general use
• OFCP: Optical fiber, conductive, plenum
• OFNP: Optical fiber, nonconductive, plenum
• OFCR: Optical fiber, conductive, riser
• OFNR: Optical fiber, nonconductive, riser
• OPGW: Optical fiber composite overhead ground wire
• ADSS: All-Dielectric Self-Supporting
B:classify according the Color coding
1.Patch cords----types of fiber optic cables
The buffer or jacket on patchcords is often color-coded to indicate the type of fiber used. The strain relief "boot" that protects the fiber from bending at a connector is color-coded to indicate the type of connection. Connectors with a plastic shell (such as SC connectors) typically use a color-coded shell. Standard color codings for jackets and boots (or connector shells) are shown below:
Buffer/jacket color Meaning
Yellow single-mode optical fiber
Orange multi-mode optical fiber
Aqua 10 gig laser-optimized 50/125 micrometer multi-mode optical fiber
Grey outdated color code for multi-mode optical fiber
Blue Sometimes used to designate polarization-maintaining optical fiber
Connector Boot Meaning Comment
Blue Physical Contact (PC), 0° mostly used for single mode fibers; some manufacturers use this for polarization-maintaining optical fiber.
Green Angle Polished (APC), 8°
Black Physical Contact (PC), 0°
Grey, Beige Physical Contact (PC), 0° multimode fiber connectors
White Physical Contact (PC), 0°
Red High optical power. Sometimes used to connect external pump lasers or Raman pumps.
Remark: It is also possible that a small part of a connector is additionally colour-coded, e.g. the leaver of an E-2000 connector or a frame of an adapter. This additional colour coding indicates the correct port for a patchcord, if many patchcords are installed at one point.
2.Multi-fiber cables----types of fiber optic cables
Individual fibers in a multi-fiber cable are often distinguished from one another by color-coded jackets or buffers on each fiber. The identification scheme used by Corning Cable Systems is based on EIA/TIA-598, "Optical Fiber Cable Color Coding." EIA/TIA-598 defines identification schemes for fibers, buffered fibers, fiber units, and groups of fiber units within outside plant and premises optical fiber cables. This standard allows for fiber units to be identified by means of a printed legend. This method can be used for identification of fiber ribbons and fiber subunits. The legend will contain a corresponding printed numerical position number and/or color for use in identification.[13]
EIA598-A Fiber Color Chart[13]
Position Jacket color
1 Blue
2 Orange
3 Green
4 Brown
5 Slate
6 White
7 Red
8 Black
9 Yellow
10 Violet
11 Rose
12 Aqua
13 Blue with black tracer
14 Orange with black tracer
15 Green with black tracer
16 Brown with black tracer
17 Slate with black tracer
18 White with black tracer
19 Red with black tracer
20 Black with yellow tracer
21 Yellow with black tracer
22 Violet with black tracer
23 Rose with black tracer
24 Aqua with black tracer
Color coding of Premises Fiber Cable[13]
Fiber Type / Class Diameter (µm) Jacket Color
Multimode 1a 50/125 Orange
Multimode 1a 62.5/125 Slate
Multimode 1a 85/125 Blue
Multimode 1a 100/140 Green
Singlemode IVa All Yellow
Singlemode
The type of the fiber optic cables are complex and various. And the following added is the classify of fiber :
Fiber classification from the operating wavelength, the refractive index distribution, transmission mode, raw materials and manufacturing methods
For induction of the various classifications for example as follows.
(1) The operating wavelength: UV optical fiber, considerable fiber, near-infrared fiber-optic, infrared fiber (0.85pm, 1.3pm
1.55pm).
(2) refractive index distribution: step (SI) type, and recent step-type gradient (GI) type, others (such as triangular, W-type
Depressed, etc.).
(3) transfer mode: single-mode fiber (with polarization maintaining fiber, non-polarization maintaining fiber), multimode fiber.
(4) raw materials: quartz glass, multi-component glass, plastic, composite materials (such as plastic cladding, liquid core, etc.)
IR materials. Coating material can be divided into inorganic materials (carbon, etc.), metal materials (copper, nickel, etc.) and plastic
And so on.
(5) manufacturing methods: pre-plastic vapor phase axial deposition (VAD), chemical vapor deposition (CVD), the drawing method
Tube law (Rod intube) and double crucible method.
2012年7月31日星期二
Magic Black box--fiber optic media converter
Our company is hammer at the produce of fiber optic media converter.Piles of converters are produced in order and with high quality.While listed below is the explanation of fiber optic media converter.
A fiber media converter is a simple networking device that make it possible to connect two dissimilar media types such as twisted pair with fiber optic cabling. They were introduced to the industry nearly two decades ago, and are important in interconnecting fiber optic cabling-based systems with existing copper-based, structured cabling systems. They are also used in MAN access and data transport services to enterprise customers.
Not like jumper,the fiber media converter is like an culoid box with several indicator light in it.Fiber media converters support many different data communication protocols including Ethernet, Fast Ethernet, Gigabit Ethernet, T1/E1/J1, DS3/E3, as well as multiple cabling types such as coax, twisted pair, multi-mode and single-mode fiber optics.The model of fiber media converter range frome PC card to high port-density.
And the most commom description of the fiber optic converter is listed as follows:
The miConverter GX/T is a 10/100/1000 copper to 1000 fiber media converter
Conforms to 10BASE-T, 100BASE-TX, 1000BASE-T, and 1000BASE-X specifications
Supports jumbo frames up to 10,240 bytes
Supports dual fiber and single-fiber 1000BASE-X SFP transceivers for standard or CWDM wavelengths
Fiber port supports multimode and single-mode fiber with ST and SC connectors and single-fiber with SC connectors
Plug-and-Play capability
Both the fiber and UTP ports support auto-negotiation
UTP port supports 10/100/1000Mbps and Half/Full-Duplex
User-selectable Link Modes for quick fault detection
Auto or manually configured Pause function for flow control
USB power via optional Power Adapter Cable
Domestic, Universal and Country/Region specific power supply options
Models support terminal connector for DC power
Small and lightweight (less than 5 ounces)
LIfetime Warranty and free 24/7 Technical Support
订阅：
博文 (Atom)