Tuesday, April 2, 2019

Fiber Optics IT Guessing Game..

How much do you really know your fiber optics performance?
Not so much if you keep saying :
a. We just plug the patch cords and the system is working fine
b. Well, by visual inspection everything was perfectly installed and tested
c.  The modem LED lights are all blinking.. that looks good

What if the line is downed?
a. Well we just call our fiber optic contractor to check it out for us
b. If our contractor recommended replacing the cable we will gladly do so.  

Be skilled and knowlegeable in troubleshooting, the problem might be simply due to dirty or bad connectors..

Click below link for :

a. Inquiries
b. To be certified as Competent Fiber Optics Installer
c. To attend our hands-on fiber optics courses

WhatsApp LINK - Any questions?
HandsON Fiber Optics / Praktikal Fiber Optik

Lack of Planning

I have received a lot of inquiries to quote on fiber optics cables and accessories by today but the delivery date line is yesterday. This is  due to urgent job at site.. 
So remember folks.. always do your best and do not over promise and under deliver.

Monday, March 25, 2019

Nota Ujian Kecekapan CA2C (Luaran) - Bhg 2

Binaan Gentian Optik

Kemungkinan Soalan CA2C

Q1.  Namakan komponen komponen yang diperbuat daripada kaca.
A1.  Core & Cladding

Q2.  Cahaya yang membawa maklumat data, voice dan video hanya melalui komponen ini..
A2.  Core

Q3. Antara berikut yang manakah bukan binan gentian optik ultra violet curable acrylated  coated fiber
A3.  Pembalut Ketiga

Q4. Apakah fungsi utama komponen cladding?
A4. Untuk melindungi core dan juga untuk memastikan cahaya sentiasa berpantul balik kedalam core apabila cahaya mengenai sempadan core-cladding

Q5. Nyatakan tujuan utama pembalut kedua
A5. Sebagai penanda kepada fiber optik berdasarkan pada warna kod yang ditentukan.

Q6. Apakah tujuan utama pembalut pertama?
Q7.  Untuk melindungi core dan cladding dari mudah dirosakkan.

Sila klik untuk Soalan Sebelum INI

HandsON Fiber Optics / Praktikal Fiber Optik

Sunday, March 24, 2019

Green vs Blue Color Fiber Optics Connectors

Never get mixed up between green connector and blue connectors
Both are the same type of  Singlemode.
The difference is simply at the tip of the fiber optics ferrule.
The green connector is called APC (Angled Physical Contact) and the blue connector represents PC (Physical Contact).

The difference between green (APC) and blue connector (PC) ferrule is best illustrated in the below diagram.

Angle polished contact connector should only be mated to another APC connector.
Mating a APC connectors to another non-APC connectors causes a very high insertion loss as shown in the below diagrams.

APC mated with APC

APC mated with non APC connector

Thursday, March 21, 2019

Nota Ujian Kecekapan CA2C (Luaran) - Bhg 1

Kemungkinan Soalan CA2C

Q1.  Apakah itu FDF 
A1.  Fiber Distribution Frame

Q2.  Apakah  nama penuh bagi singkatan FTB?
A2.  Fiber Termination Box

Q3.  Dilokasi manakah pigtail atau fibercord disambung menggunakan splicing machine?
A3.  Fiber Termnation Box

Q4.  Apakah penyambungan yang digunakan untuk menyambung antara FDF dan EQUIPMENT?
A4.  Patchcord Cable

Q5.  Beri definasi Local Network ?
A5. Jarak antara ibusawat dengan pelanggan kurang dari 5 kilometer  

Q6.  Apakah yang dimaksudkan dengan  Junction Network ?
A6.  Jarak antara ibusawat dengan pelanggan kurang dari  40  kilometer  

Q7. Apakah yang dimaksudkan dengan  Trunk Network ?
A7. Jarak antara ibusawat dengan pelanggan melebihi dari 40 kilometer

Sila klik untuk Soalan Selepas INI

HandsON Fiber Optics / Praktikal Fiber Optik

Wednesday, March 20, 2019

Self Made Splicing Box

It is a public holiday and all shops are closed but you need to get you work done by hook or by crook..
Hope this is a temporary solution..

Lady Splicer

It is quite rare to see a beautiful lady splicer in the field of fiber optics but here she is.
It is believed the photo was taken in Vietnam.
I am pretty sure lot of guys are more than willing to assist her in making the job done..

Tuesday, March 19, 2019

Asian Countries FTTH Global Ranking

Asian Countries ranking in Fiber to The Home Installation
Top of the list is UAE followed by Qatar & Singapore.
The survey was done by IDATE for FTTH Council Europe. 
Malaysia's FTTH nickname is U-N-I-F-I..  Roughly about 80% Malaysian are yet to be connected by fiber optics.

You can find details on the survey here  details 

Sunday, May 21, 2017

Messy Fiber Optics Wiring..

These are fiber optics installation photos that were posted on my Facebook or Linkedia or WhatsApp social media

Some seem to be in good installation practice and some seem the installers were either in a hurry or simply wanted  to get the job done..

Sunday, August 28, 2016

OTDR Index of Refraction

The basic optical property of a material is the index of refraction. 
It is also one of the key parameter that needs to be key-in into OTDR as to get accurate result on actual fiber optics distance measurement.
The index of refraction (n) measures the speed of light in an optical medium. 
The speed of light (c) in free space or vacumm is 
Therefore index of refraction of a material is equivalent to :-
When light enters  a different material ( from glass into air or from air into glass)is   the speed changes. 
This causes the light to bend or refract.
Light will always travel slower in the fiber material than in air. 

The index of refraction for glass  is approximately  1.50 or lower.
The index of refraction for air  is exactly 1.00. 

In order to get the actual fiber optics length measurement using OTDR, one  is required to enter fiber optics index of refraction into one of OTDR key parameters. The fiber optics index of refraction could be obtained from the fiber optics cable manufacturer.

OTDR Setup - Index of Refraction & Fiber Distance

All OTDRs regardless of brand have four basic setup requirement i.e. the OTDR user is required to key in these four basic data parameters into OTDR in order to get good and accurate fiber trace analysis.

The required data parameters are :-

  1. Testing Range - Refer to Article HERE
  2. Pulse Width - Refer to Article HERE
  3. Index of Refraction 
  4. Averaging Time
Index of Refraction
The relationship between distance and velocity or speed is as shown below -
You can review previous article on Index of Refraction HERE or HERE

As previously mentioned index of refraction measures the speed of light in optical medium. It is a function of velocity of light in vacuum and velocity of light in the opticel fiber medium or simply stated as below -
Velocity of light in fiber optics can be further expressed in terms of velocity of light in vacuum and index of refraction. This is done by rearranging the index of refraction equation as stated above.
Knowing that C or velocity of light in vacuum is a constant value
Then the distance of fiber optics as measured by OTDR can be simplied as shown below
The index of refraction, n,  is a known value which can be obtained from the fiber optics manufacturer. While t , OTDR pulse width  and its backscatter light travelling time , can be measured by OTDR automatically ie. the initial time laser pulse width launched into fiber optics and time taken by backscattered light returned back into OTDR.

Therefore, the measured of fiber optics distance is a function of index of refraction.
As value of IOR increases the measured fiber optic distance or length is getting shorter.
As value of IOR decreases the measured fiber optic distance or length is getting longer.
If the OTDR index of refraction does not match to that of fiber optics under testing IOR then the OTDR distance traces might show the incorrect results.

If the fiber optics under testing IOR is not known, then the end-user can use the OTDR default  IOR setting.

Typical fiber optics IOR value is between 1.4000 to 1.6000

Rule of Thumb
Always obtain the fiber optics Index of Refraction values from corresponding fiber optics manufacturer.