Single Mode vs Multi Mode Fiber Transceivers

The key difference between SMF and MMF?
...Distance and cost!

• Single Mode Fiber has a greater distance potential and can support runs between 2 meters and 10,000 meters.
• Multimode generally has a reach up to ~550 meters, whereas single mode has the potential to reach 10,000 meters (40,000 meters with ER)
• Single mode fiber -> lower power loss characteristic than multimode fiber, which means light can travel longer distances through it than it can through multimode fiber.

Costs

• The optics for SMF are twice the cost of MMF optics.
• BUT when installed as part of a project, the extra cost of SMF is negligible compared to MMF.
• The fragility and increased cost to produce single mode fiber makes it more expensive to use, which is why multimode is typically used when you don’t need the distance of single mode.

Speed
Both single-mode and modern multi-mode fiber can handle 10G speeds.

The distance requirement is critical

• Multi-mode which can get you 300-400 meters.
• Single-mode can get you 10km, 40km, 80km, and even farther – you just need to use the appropriate optic for the distance required. Prices go up accordingly.

Compatibility issues:

• They are not compatible.
• You cannot mix multimode and single mode fiber between two endpoints.
• The optics are not compatible either.

How they work:

• Multi-mode fiber (MMF) – uses a much bigger core and usually uses a longer wavelength of light. Because of this, the optics used in MMF have a higher capability to gather light from the laser. In practical terms, this means the optics are cheaper.
• Single-mode fiber (SMF) has much tighter tolerances for optics used. The core is smaller and the laser wavelength is narrower. This means that SMF has the capability for higher bandwidth and much longer distances in transmission. Single-mode fiber has a smaller core (9 micron), resulting in less light diffraction over distance than multimode fiber (50, 62.5 micron).

Are single mode transceivers a better option for the future?

• Using only single mode lets you use one fiber type for everything (fewer optics, cable types to spare)
• No likelihood of obsolescence (eg, OM3 seemed like it was current for ~3 years)
• Offers single-pair options for 40 & 100g
• Offers single-fiber options at 1 & 10g
• Although the optics are more expensive they’re < 2x while offering much longer reach (remember to buy OEM optics, not rebadged)
• With SMF it also means you won’t need to rip out your MMF fiber plant to upgrade speeds in a few years.

Courtesy of: Blue Wave Micro

How to Configure Huawei B593 LTE CPE 4G Router

In order to configure B593 gateway, you should access Web-Based Utility at frist. It is a web browser-based configuration interface that allows easy device setup, configuration and management through Internet browser. Here you can take a detail view about how to do the configuration settings for B593.

Steps to configure B593 gateway

1Access the configuration GUI

1. From your computer, launch your Web browser. and type http://192.168.1.1 in the address bar.
2. Select the Admin radio button and type the Admin password ( At the back of the B593 router, you could see the router's wesite portal and password), press Enter or click Login.

2Do configuration setting with Setup Wizard

1. In the left hand column, click the Setup Wizard. Then click Next.

2. The Wireless and Wireline settings appear. Note: It is recommended to keep the default settings.

3. Click Next and the WLAN (Wireless Local Area Network) screen appears.
Ensure the WLAN checkbox is selected to enable Wi-Fi on the Smart Hub.
Select the desired working Mode for the Wi-Fi network.
Note: 802.11b/g/n is most compatible with other devices. 802.11n has the greatest range.
Select the Channel. It is recommended to select Auto.
Enter a name for your Wi-Fi network in the SSID field.

4. Click Next and the WLAN Security settings appear.
Select the Security type. WPA2-PSK is recommended.
Enter a network password in the WPA-PSK field.
Select the WPA encryption method. AES is recommended.

5. Click Next and review your settings and click Submit to confirm your configuration.

After these settings, you have fininshed the configuration for B593 LTE.

Telecommunication Acronyms and Abbreviations

Numerics
3G The Third Generation
A
AC Alternating Current
AES Advanced Encryption Standard
ALG Application Level Gateway
ARP Address Resolution Protocol
AP Access Point
APN Access Point Name
C
CPE Customer-Premises Equipment

D
DC Direct Current
DC-HSPA+ Dual Carrier High Speed Packet Access Plus
DDR Double Data Rate
DHCP Dynamic Host Configuration Protocol
DL Down Link
DMZ demilitarized zone
DNS domain name service
E
EDGE Enhanced Data Rates for GSM Evolution
F
FDD frequency division duplex
G
GPRS General Packet Radio Service
GSM Global System for Mobile Communications
H
HSPA+ High Speed Packet Access Plus
HSPA High Speed Packet Access
HSDPA High Speed Downlink Packet Access
HSUPA High Speed Uplink Packet Access
I
ICMP Internet Control Message Protocol
IP Internet Protocol
L
LAN Local Area Network
LED Light Emitting Diode
LTE Long Term Evolution
M
MAC Media Access Control
MDI Medium Dependent Interface
MDIX Medium Dependent Interface Crossover
N
NAPT Network Address and Port Translation
NAT Network Address Translation
P
PIN Personal Identification Number
S
SDRAM Synchronous Dynamic Random Access
Memory
SMS Short Message Service
SOHO Small Office Home Office
SSID service set identifier
T
TDD time division duplex
TKIP Temporal Key Integrity Protocol