Optical Networks [rss]

PodSnacks: Hybrid Fiber/Coax (HFC)

Posted Wednesday, August 06, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/hfc.mp3
The fourth and final installment in our access network series, which thus far has focused on Fiber to the X (FTTX), switches gears a bit to a different industry segment, that of the cable companies. In today's PodSnack, Dave and Trevor take a bit Read More...

PodSnacks: Fiber to the Premises (FTTP)

Posted Monday, August 04, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/fttp.mp3
The third installment in our series on Fiber to the X (FTTX) looks at Fiber to the Premises (FTTP). This is the predominant architecture being championed by Verizon as part of their FiOS service. In today's PodSnack, Dave and Trevor discuss the technology Read More...

PodSnacks: Fiber to the Node (FTTN)

Posted Friday, August 01, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/fttn.mp3
Today we continue our series on Fiber to the X (FTTX) with a look at Fiber to the Node (FTTN). This is the predominant architecture being championed by AT&T. In today's PodSnack, Dave and Trevor will explore the technology and discuss some of Read More...

PodSnacks: Fiber to the X (FTTX)

Posted Wednesday, July 30, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/fttx.mp3
Today we begin a short series on Fiber to the X (FTTX), which will be completed over the coming weeks along with our concurrent series on Fiber Channel. FTTX is the generic name given to an entire family of access technologies and deployment models being Read More...

PodSnacks: Wavelength Division Multiplexing

Posted Wednesday, May 07, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/wdm.mp3
We wrap up our multiplexing series with a quick look at wavelength division multiplexing (WDM). In today's episode, Michel and Mark noodle on the concept a bit. Over the next few days we will begin a series of PodSnacks based on requests from listeners. Read More...

PodSnacks: Optical Network

Posted Tuesday, April 08, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/optical_network.mp3
In the past, we have looked at SONET . Since SONET stands for Synchronous Optical Network , one would be tempted to think we have already discussed optical networking, so there' nothing left to be said. The fact is, we haven't really talked about Read More...

PodSnacks: Graded-index vs. Stepped-index Multimode Fiber

Posted Tuesday, April 01, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/grin-stin.mp3
We have done other PodSnacks on optical fiber . We've even discussed the difference between single-mode fiber and multimode fiber . Today we narrow the scope even further and distinguish between graded-index and stepped-index MMF. The difference lies Read More...

PodSnacks: Synchronous Optical Network (SONET)

Posted Friday, March 28, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/sonet.mp3
At the core of virtually every carrier and MSO's data and voice network sits a technology we have been using since 1984. By some estimates, over 99% of all of the voice and data traffic that touches a carrier or MSO network crosses a SONET facility Read More...

PodSnacks: Optical Fibers

Posted Friday, January 25, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/optical_fiber.mp3
Let's shift gears a bit and get down into the wires. Well, not exactly the wires. More specifically the fibers . Although there is still a lot of copper on customer premises and within carrier offices, today the core of telecommunications networks Read More...

PodSnacks: Four-Fiber Bidirectional Line Switched Ring

Posted Wednesday, September 12, 2007 6:20 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/4f-blsr.mp3
Today we conclude our examination of SONET ring types. In the past two days we looked at unidirectional path switched rings (UPSR) and two-fiber bidirectional line switched rings (2F-BLSR). Today we look at the larger four-fiber bidirectional line switched Read More...

PodSnacks: Two-Fiber Bidirectional Line Switched Rings

Posted Tuesday, September 11, 2007 7:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/2f-blsr.mp3
Now isn't THAT a mouthful? Today we continue in our examination of SONET ring types. Yesterday we looked at the unidirectional path switched ring (UPSR). Today we'll take a quick look at the two-fiber bidirectional line switched ring (2F-BLSR). Read More...

PodSnacks: Unidirectional Path Switched Ring

Posted Monday, September 10, 2007 7:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/upsr.mp3
We've talked before about SONET . If you caught those sessions, you know that SONET protects circuits using a ring architecture. What you may not know is that there are actually three kinds of SONET circuits. Over the next three days, we're going Read More...

PodSnacks: Multimode vs. Single-mode Fiber

Posted Wednesday, September 05, 2007 7:00 PM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/mmf-smf.mp3
Today's words aren't so much related specifically to SONET as they are related to optical fiber in general. Today we look at two classes of fiber known as multimode fiber (MMF) and single-mode fiber (SMF). These two types of fiber tend to be found Read More...

PodSnacks: Virtual Tributary

Posted Tuesday, September 04, 2007 7:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/vt.mp3
As promised, our word today is associated with SONET . Yesterday we looked at Optical Carrier (OC) and Synchronous Transport Signal (STS). Today we're going to look at Virtual Tributaries (VT). A VT is a structure designed to carry sub-rate payloads Read More...

PodSnacks: Optical Carrier vs. Synchronous Transport Signal

Posted Monday, September 03, 2007 7:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/oc-sts.mp3
Today (and tomorrow) we're going to look at a few words associated with SONET . Today we focus on the terms Optical Carrier (OC) and Synchronous Transport Signal (STS). These terms are often used interchangeably, but they have a specific meaning. Read More...
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