Do We Really Need Fiber To The Home (FTTH) in India?

Carrying on with my previous post about broadband connectivity in India, I will be talking about FTTH i.e Fiber to the home. What is FTTH, brief introduction to technology behind it, and scene of FTTH in India. To get idea of fiber to home, we first need to understand basic difference between communication over conventional copper, wireless mediums and next of fiber.

The biggest problem in using copper in communication is “noise”. Copper pairs get noisy over distance, apart from getting too much effect of interference from nearby environment.

Now to carry more bandwidth, one needs to use really high frequencies (like we do in various flavors of DSL), and high frequencies are
effected by noise even more. Imagine noise as road block interrupting traffic, and high frequency as car running at high speed!

Till now there has been no way out to the noise problem of copper. A lot of research work is still going on, but till now all we see is multiple bonding of pairs for increasing speeds i.e what At&t seems doing in US.

Next, if you look at wireless communication – as I explained in my last post due to limited spectrum, overall capacity is very much limited and one can’t provide high speed broadband for very low rates to everyone. That is what makes 3G, EVDO and other stuff expensive.

Now coming on main part of this post – fiber. In case of fiber, communication is done using light which travels in whole fiber via a simple Physics rule called total internal reflection. Principle is quite simple, but it makes communication very effective as fiber is NOT prone to interference by any external element like other wires, apart from that loss of signal per Km is way too less in fiber as compared to copper. This makes fiber a very good “Physical” medium for carrying high bandwidth.

Considering those simple physical properties, it seems like fiber is really awesome, and should be used everywhere. Well there are few other important things when we discuss copper Vs fiber like it’s very hard to splice fiber, one needs a dedicated team of trained technicians to splice fiber, apart from that if a fiber gets damaged, it’s again hard to fix it as compared to just rejoining copper.

Apart from that a fiber splicing kit costs as high as $1000 as compared to less then $1 cutter used in copper. Also, till now all computers still talk in electrical signals, and whatever way we go at the end, we need to have electrical signals, thus we need to convert light impulses in fiber back to electrical impulses using ONT – Optical Network Termination. All these factors make fiber quite expensive. ONT still cost as high as $500 which is way too high amount considering average user pays less then 1/5th of that in a year.

Do we really need FTTH in India?

Well, that’s a hard question. Answer varies.

One thing we always talk about is Internet speed or bandwidth. Fiber has very high bandwidth, and there is no other alternate. It’s true, but question is – do we really need to deliver that much high bandwidth to all end users?

Using an advance DWDM equipment, one can carry as high as 10Gbps over single wavelength in a fiber. There are 160 possible wavelength, and thus in theory, one can give as high as 1.6Tbps over single fiber pair. (In real that is quite less due to limitation from switches, protocol running on top etc).

Yesterday we share a post on MTNL’s FTTH offering on TelecomTalk. Well they just rolled FTTH out and are “capable” of giving 1Gbps speed to end user, but if you notice plan 1Mbps still costs 999Rs a month. You can imagine cost of 1000 times more bandwidth!

Firstly I would like to say 100Mbps, 1Gbps sounds very “awesome” speed, but fact is in real people HARDLY need that much speed and we can’t ignore that fact specially when we are demanding for really expensive technologies.

Few days back, I had a discussion with my friend living in Sweden. He just got a upgrade from 16Mbps DSL to 100Mbps fiber. I asked him for his feedback over performance, and his reply was “Anurag, other then good upload speed, I hardly see any difference”

So why he missed to see a 6 times more faster connection?

Well, at 16Mbps, one can download 2MB every second. If you look at average web-page size, you will see average page on modern sites are well below 500KB, thus he can get whole page in 250ms. An average Youtube video is around 20-25MB, and can get that in 10-12seconds on DSL. Even for heavy downloading work (although he doesn’t really do that), he can get a 1GB file in 500seconds (even less then 10mins).

Now people hardly do anything “new” or “fast” in real world on speeds beyond 10-15Mbps. Unless you plan to share that bandwidth up on multiple computers. Again, I am talking about bandwidth requirement on average computer.

But yes, there’s a big problem in DSL – very slow upload speed. It is due to fact that co-axial wires are tightly packed in big copper trunks as they get out from exchange and they are spliced further so on as they reach end user. So when a end user sends some data to central exchange (upload…) the weak signal (because of low power consumption by CPE) goes on, and as it gets more closer to exchange, it becomes even more weak, apart from fact that it gets into tightly bundled 100pair trunks which are carrying data for lot of other users.

This causes “cross-talk” and even reduces signal strength degrading upload speeds. He had 16Mbps download while 500Kbps upload DSL connection, while now he has 100Mbps (up & down symmetrical) and one can surely tell difference in 500Kbps Vs 100Mbps upload speed.

Coming back on point – if one needs 5-10Mbps, we can easily get it on existing DSL connections, and we don’t really need FTTH. Problem comes when more and more subscribe to 10Mbps plan, and it increases cross talk further degrading speed. But such cases are possible when a whole colony/street/apartment is demanding for high speed broadband and remember in all such cases it is economically feasible to bring fiber close to that street and from there back on copper.

This is known as FTTB/C – Fiber to the Building/ Fiber to the Cabinet. From that cabinet, one can carry signal over copper via VDSL or even conventional cat5 ethernet. Such hybrid fiber-copper models are really good in bringing down cost of expensive FTTH technology + they have enough bandwidth to serve demand. Don’t say you can’t get 10Gbps on VDSL (point is – how many people really need it!) 😛

Well that’s all about basic of FTTH. More to come soon! 😉

About the author:

Anurag is a Student and a part time network admin at dito.

He is all around network related technologies like DNS, Internet routing, servers, connectivity etc. He is also one of Power Posters at Official Google Apps forum and is involved in deployment of Google Apps.

Anurag is doing bachelors in Information & Technology from a State college in Haryana.

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93 Comments on "Do We Really Need Fiber To The Home (FTTH) in India?"

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Sarveshwar
Sarveshwar
August 1, 2016 11:09 am 11:09 AM
Knowing that the author is still a student, I won’t expect much from him now. But I will say that he is plain ignorant. A normal webpage is 500 KB? Dear Anurag, please surf more web pages. Use Vivaldi browser which will show you how much data is being downloaded in a webpage. Now, to the title of the article. How stupid is that? Who needs it? I’ll ask you this: Who needs to eat four times a day? You can survive if you eat once a week, or once in three days! That purely depends on your stamina. See… Read more »
Narendra
Narendra
July 17, 2016 10:43 pm 10:43 PM

You are retarded …an average 1080p youtube video is around 1-2gb. dont give out false information to people

Anurag Bhatia
Anurag Bhatia
July 17, 2016 11:39 pm 11:39 PM
Dear Narendra please try to be more polite. No need to be so aggressive when commenting on such articles. About this post – it’s 5 years old (if you did not notice already) and lot of things have changed over last 5 years. BSNL/MTNL completely failed to maintain most (not all but most) of their copper infra and spectrum issues halted the growth of broadband. Hence contrary to what I wrote 5 years back – I think we do need FTTH now because copper just did not pick up while cost of fiber deployment has gone very low with PON… Read more »
Aniruddh Joshi
Aniruddh Joshi
August 1, 2016 3:19 pm 3:19 PM

No offence Anurag but we still needed FTTH back then. Youtube had started it’s full HD support back in 2009.

Zuhaib
Zuhaib
May 4, 2016 11:23 am 11:23 AM

Very good article Anurag.
Your understanding of things is very simple and basic, stick to the field you love.

John
John
February 12, 2016 8:17 pm 8:17 PM
Usually the band width speed from CPE to the site node will be constant of 10Gbps or more in case of Fiber optics. But from the apartment or site node to the home is always sharable ie each connections to home is share able from 10Gbps. So as the subscriber increases the egress port usage for the home also increases, which share the constant 10Gbps to all the ports. In this case if you have more subscribers, how a constant speed to the end user(subscriber) can be maintained? So does it mean number of connection increases the bandwidth will be… Read more »
Mayur S
Mayur S
January 18, 2015 12:35 pm 12:35 PM
I only agree TO that 16 MB/s is a reasonable speed But (REALITY CHECK )we don’t get even close to it INDIAS Average is 2.5MB/s Down) and this is seriously bloated by the 50MB/s down upto 10 GB connections of the metropolitan cities like mumbai 1) An average youtube video is abot 5 min not 20 to 25 Mb it depends on quality u watch it .and in 2015 you are not watch it below 720p (requires 4MB/s connection to barely able to stream without buffer) 2) Who The heck Told u that the average customer does need bandwidth you… Read more »
simanta
simanta
July 24, 2014 7:40 pm 7:40 PM
hello, u enlightened us with some very good technical issues i knew way less before. Thanks for that, but for the “need” topic, i am with technology. u see i am from assam, northeast, which is one of the last regions where technology reaches in india. And to be a online gamer from this region does suck, or maybe gaming community in india is not so developed or idk. I don’t need 100’s of GBs to download, but more speed having lower latency. And i welcome every technology that reaches the big cities, so that soon we have the access… Read more »
Ankit Goyal
Ankit Goyal
January 11, 2014 4:02 pm 4:02 PM

Does FTTH work better than DSL in peak hours because I cuurently have 16 Mbps plan from YOU Broadband, which dies in peak hours. But my local cable guy is FTTH at 6 Mbps for 350 GB at Rs 6000 fir a year. So does FTTH provide more reliable service than DSL?

deepak
deepak
December 14, 2013 11:47 pm 11:47 PM

No. Comment

Hari
Hari
November 1, 2013 12:55 pm 12:55 PM

Hi Anurag,
Does the technology has any side effects on health?

uday
uday
July 10, 2013 3:13 pm 3:13 PM

@anurag,
BSNL is providing FTTH with 16Mbps plan for 6999/-
On the other hand Tata Docomo is providing Internet Leased Line (ILL) of 1Mbps for nearly the same amount. Tata is also providing the Fiber connection.
What do you think, which one is better for our business. (we need around 100GB of Downloads and 100GB of upload per month)
Please Do reply.

Aniruddh
Aniruddh
October 4, 2014 7:12 pm 7:12 PM

@Anurag If you’re concerned about up-time, go for leased line connection because they have business grade SLA (usually 99%)

On the other hand, BSNL FTTH is a broadband based connection, the only difference is the medium. As for the contention ratio, I have BSNL FIBRO 5999 Plan with 1:1 contention ratio.

paramesh
paramesh
January 4, 2015 2:03 pm 2:03 PM

I am having BSNL FTTH in my house 75GB @45 MBPS and cost around 1700/-… Believe me its just awesome.. u can download an HD movie @ around 5 MBPS so literally u have it in 7 mins (~ 2GB)… And I Work from home and I feel as good as working from office…

saikumar
saikumar
March 13, 2015 7:33 pm 7:33 PM

hi paramesh may i know which city u live in???

Anurag Bhatia
Anurag Bhatia
July 11, 2013 12:54 am 12:54 AM
Hi Uday I strongly guess BSNL’s FTTH offering is home/business grade connection with contention ratio Vs Tata’s offering which is a leased line (usually with 1:1 contention). No doubt speed difference is way too much to consider Tata. You should checkout with other users of BSNL FTTH to get idea of quality of last mile and uptime and if that’s OK and if you are not concerned too much about bit high latency due to their weird routing then BSNL will be a good choice. For under 100GB you will very likely get way beyond 1Mbps (what Tata is offering).… Read more »
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