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Introduction

00:00:00

The use of fiber optic cables is increasing in data centers and local networks, with the aim of achieving higher speeds and capacities. While local networks have been using copper cables for years, the shift to fiber optic cables is becoming more common due to the need for faster speeds and higher capacities.

LAN vs Data Center

00:02:26

The size of the optical fiber core is important in determining the type of cable to be used. Single-mode fiber optic cable uses a small core size of 8 to 10 microns, which requires more expensive electronics and lasers but provides higher bandwidth and longer distances. On the other hand, multi-mode fiber has a larger glass core of around 50 microns, allowing for the use of cheaper electronics and lasers, which reduces costs.

Core size is important

00:03:13

The graph compares the relative size between single-mode fiber core, multi-mode fiber core, and old 62.5 glass fiber core, showing that they all have the same size, and when adding the jacket to the glass, it fits perfectly. The color difference is due to the jacket, not the core size.

Fiber cores....

00:03:41

Fiber Cores The text mentions the three types of fiber optic cables, with OM1 being the legacy multi-mode cable with a core size of 62.5 microns and a maximum data speed of around one gigabit, installed in 1995-

The jacket color for OM1 is orange.

Fiber cable: legacy

00:04:09

The article discusses the different types of fiber optic cables, including OM3 and OM4, and their advantages in terms of speed and distance. It also provides a table showing the nomenclature and light loss for each type of cable.

OM1 -OM4 cable standards

00:06:10

The main problem faced by fiber optic cables is light loss, which is unacceptable for long distances. OM3 and OM4 fiber optic cables are optimized for faster networks and have a jacket color of aqua, while the improved version of OM4 has a violet jacket color and allows signals up to 300 meters.

1-U breakout trays using MPO connector and cables

00:08:27

The text discusses the use of MPO connectors and cables for breakout trays in order to achieve high-speed data transfer through fiber optic cables, including the use of wavelength division multiplexing for even greater bandwidth and distance capabilities.

Dense Wave Division Multiplexing

00:08:44

Dense Wave Division Multiplexing is a technology that uses optical fibers with a single mode to transmit multiple signals simultaneously, and it can be reviewed on a channel by observing its layer 2 and related technologies.

CWDM bandwidth grows each year

00:08:58

The technology of wavelength division multiplexing in multi-mode OM5 has been developed to introduce the wavelength division multiplexing in short wavelength so that some of the excellent characteristics of single mode can be used in multi-mode. OM5 is our newest fiber optic cable, its jacket color is lime green, it is fully compatible with OM3 and OM4, uses a wide range of wavelengths between 850 nanometers and 953 nanometers, and is designed to support short wavelength division multiplexing, which allows us to get 40 to 100 gigabits for a single.

newest fiber cable

00:09:40

New fiber cables with single-mode fiber provide 50 times more distance and are commonly used in high-bandwidth applications, especially in telecommunication networks and data centers. The two versions of single-mode fiber are OS1 and OS2, which are defined by the ITU standard.

Single-mode, 8-10-micron cable

00:10:04

The OS2 cable has almost half the attenuation per kilometer compared to OS1, making it a better choice for longer distances.

OS1 and OS2 fiber optic cables

00:10:17

The price varies depending on the territory within data centers. OS1 is commonly found outside data centers, while OS2 is found inside. The jacket colors for OM1 and OM2 are orange, while OM3 and OM4 are aqua, and if it's not OM4 plus, it will be purple. The jacket color for OS1 and OS2 is yellow.

Fiber jacket colors

00:10:48

Manufacturers produce fiber optic cables in non-standard colors, so it is important to keep in mind that some manufacturers will also match a specific code of colors on the connector body and strain relief based on the fiber optic cable you are using. Not all manufacturers adhere to this, but some do and it makes it really easy.

Non-standard color cables

00:11:07

The text discusses the difficulty in identifying and categorizing non-standard color cables, particularly in relation to fiber optic cables and the national electric code.

Connector color code

00:11:17

The color code of connectors indicates the type of material that produces the jacket on your cable.

Connector Body

00:11:24

Plenum space is a crucial concept for professionals working in buildings where ceilings are suspended and above them are cables.

Outer Jacket is important

00:11:35

The text does not provide any information related to the importance of the outer jacket.

Plenum space

00:11:48

Plenum space refers to the vertical area of the wall where cables run from floor to ceiling or from one floor to another, and it is important to use the correct jacket material for the cables according to the local fire and electrical codes. Using the wrong type of cable jacket material in the wrong space can result in a fire hazard.

Fiber cable jacket types

00:12:53

Different types of fiber cable jackets include plenum, low smoke zero halogen, and PVC. It is important for installers to be aware of the type of jacket used in order to properly install the cable. Fiber optic connectors such as SC and LC have a locking mechanism to secure them in place.

SC connector

00:15:10

The SC connector is the most popular connector in fiber optics, with a 1.25mm ferrule that holds the fiber optic. It is commonly used in dense environments, while the LS8 connector is popular in Japan and Asia and is used for SONET, SDH, LAN, WDM, CATV, and ATM networks.

MU Connector

00:16:47

The MU Connector has high insertion loss and is avoided by many device manufacturers. The new connector in the block is the CS connector from Cinco, which is half the size of an LC connector and designed for the next generation of 200-400G transceivers. A comparison between the two connectors can be seen in the lower left part of the image.

MT-RJ connector

00:17:15

The article discusses the features of the MT-RJ connector and its potential popularity in the data center industry due to its integrated shutter that protects against dust and debris.

E2000 Connector

00:17:44

The E2000 connector has a very low return loss of over 0.1 dB and is one of the lowest in the industry. Data centers are demanding more optical fiber density and this is where MTP and MPO connectors come in, allowing up to 24 fiber optic connections to be made with one connector.

MPO/MTP straight-through cable

00:19:08

The MPO/MTP straight-through cable is one of the most important methods for connecting electronic devices, and it allows for the connection of individual fibers. By using a small cassette, the fibers can be exposed and connected to an LC connector on the front end. Different types of ceramic ferrules can be used for fiber optic connections.

Fiber connector tips: ferrule

00:20:22

The ferrule is a crucial component of fiber optic connectors, and its design can affect the quality of the connection. The physical contact of the ferrule is important, and engineers must consider factors such as the angle and gap between connectors to minimize signal loss.

Optic problems

00:22:10

The design of these connectors is not an easy task for these UPC engineers. The APC connector is the latest technology called physical contact angle. The end faces are still polished and ground, but they are angled at about 8 degrees, which maintains a tight connection and reduces back reflection.

Picking the right fiber connector: PC, UPC or APC

00:23:21

The article discusses the importance of choosing the right fiber connector, such as PC, UPC, or APC, for optimal performance in fiber optic systems. It also explains the role of transmitters in converting electronic data into optical signals for transmission through fiber optic cables.

Transceivers: the key to fiber optics

00:24:05

The article discusses the importance of optical transceivers in local networks and data centers, as they convert optical signals into electronic signals and vice versa.

Transceiver Basics

00:24:17

Understanding the components or specifications of an optical transceiver is important when dealing with electrical and optical courses, heating distribution, and fiber types to determine its cost and functionality.

Optic Transceivers and Fiber cables

00:24:36

Optic Transceivers and Fiber Cables The SFP format is a well-known factor for transceivers that usually mount on a circuit board and allow receivers to connect various designs such as optical transceivers or receivers with an RJ

The optic transceivers convert electrical signals into optical signals and vice versa, while the serializers and deserializers are functional blocks used to compensate for the limited output of the input.

A Serializer/Deserializer

00:26:20

Four of them operate at 28 gigabits per second to produce a 112-gigabit optical fiber line, and the biggest limitation for optical fiber transmission is non-optical electronics. Let's explore building a new fiber transmitter with a 100 base SR transmitter. The QFSP28 transmitters are one of the latest and largest, and remember that we are only looking at the transmitter part of an optical transmitter, there is also a receiver there, so you see the electrical contacts that we are assuming have ASICs.

Let's build the newest fiber transceiver: 100GBASE-SR4 QSFP28

00:27:01

The fiber transceiver uses laser diodes for serialization and deserialization, which are cooled by a mechanism to create a stable wavelength for transmission. Lenses are used to focus the light towards the fiber cable and to tune the precise wavelength values.

TRANSMITTER OPTICAL

00:27:27

Transmitter Optical The optical assembly will not only perform multiplexing, but also remove all unwanted wavelength so that only the correct wavelength goes through. The demultiplexer will reflect the light and send specific wavelengths through color filters, allowing only the desired wavelengths to pass.

Receiver Optical The receivers have both transmitters and receivers, and the light is sent through pin diodes that translate the light into electrical signals. The signals are then sent to an amplifier and printed on a circuit board. The use of high bandwidth receivers allows for faster speeds, but also requires more energy and heat distribution.

High bandwidth transceivers can "breakout" to many lower bandwidth transceivers

00:30:14

High bandwidth transceivers have the ability to break out into multiple lower bandwidth transceivers, allowing for more efficient use of fiber optic networks. Industry professionals are collaborating through online forums to advance optical networks due to the slow production of standards by IEEE.

Optical Internetworking Forum

00:30:46

The Optical Internetworking Forum is developing coherent laser receiver modulator drivers ranging from 100 to 600 gigabits per second. This technology can be seen in action at the event.