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Optical/IP

Blue Leaf: From Gas to Glass

Blue Leaf Networks thinks there's an opportunity to turn some of its expertise in gas and air into optical networking -- and we're not just talking about a marketing plan.

The company, which officially changed its name from Informed Diagnostics this summer, used to focus on cavity ring-down spectroscopy, which uses lasers to detect traces of certain gases in the air. It was targeting markets related to medical diagnosis, consumer health, security, and scientific research.

The company now looks to be migrating its laser technology to telecom applications. Informed Diagnostics was working on VCSEL (vertical-cavity surface-emitting laser) technology in the mid-infrared frequency range, which is about 2000 to 3000 nanometers (2.0 to 3.0 microns). While this laser operates at much longer wavelengths than those used in telecom applications, which range from 850nm to between 1310nm and 1550nm, it is conceivable that the renamed company could shorten its wavelength capabilities to target telecom applications.

"There is some overlap between what they were doing in gas detection and telecom applications,” says Frank Tittel, professor of electrical engineering at Rice University in Houston, who participated in a conference set up by Informed Diagnostics in June in St. Petersburg, Russia. "I guess their investors saw more potential in telecom than in healthcare."

The company isn't divulging much -- the Silicon Valley startup is so stealthy its phone number isn’t even listed in the phone book. It doesn't even have a Website. Blue Leaf is backed by Greylock and Weston Presidio Capital.

Light Reading has heard through its sources that the company could now be working on 1310nm to 1550nm VCSELs. This is a hot area, because lasers functioning in this wavelength range promise to increase transmission distances and reduce the costs of telecom equipment.

Currently, there are only three announced companies using a VCSEL approach to play in the 1550nm tunable laser market: Applied Optoelectronics Inc. (AOI), which just last week announced a $10 million second round of funding, Bandwidth9 Inc., and Coretek, which was bought by Nortel Networks Corp. (NYSE/Toronto: NT) (see Startup Makes Waves in VCSEL Market). There are also only a handful of companies that claim to be working on 1310nm lasers, including Cielo Communications Inc. (see Cielo Pushes the Limits on Lasers).

System companies buying these lasers are interested in the longer-wavelength VCSELs because they can significantly extend the distance that light can be transmitted. For example, a typical 850nm laser transmits light about 300 meters, whereas longer-wavelength lasers in the 1310nm to 1550nm range can transmit light anywhere from 40 kilometers to 140 kilometers. Longer-reach optics means fewer moving parts in a system, which ultimately reduces system and operational costs.

But longer-reach VCSELs aren’t easy to develop. The biggest issue for companies developing this technology is finding a way to manufacture large quantities without sacrificing product performance.

So far, the company hasn’t commented on its specific plans or on the amount of funding it has raised, and it's stingy on information about its management team. But Charles Chi, general partner at Greylock and a Blue Leaf board member, confirmed a few names on the executive list. Paul Detering, the former president and CEO of Wildfire Communications and former Nortel executive, is Blue Leaf’s CEO. The company has also brought two former Cisco Systems Inc. (Nasdaq: CSCO) executives on board: Kelly Ahuja, former optical product line manager and director of marketing, and Larry McAdams, a former optical networking product manager focused on DWDM interoperability with IP routers.

- Marguerite Reardon, Senior Editor, Light Reading
http://www.lightreading.com

beachgolff 12/4/2012 | 7:59:08 PM
re: Blue Leaf: From Gas to Glass "Light Reading has heard through its sources that the company could now be working on 1310nm to 1550nm VCSELs".

Could be! They are!


Beachgolff
laserfocus 12/4/2012 | 7:59:07 PM
re: Blue Leaf: From Gas to Glass Don't you mean Charles Chi, GP at Greylock? Tsk tsk
^Eagle^ 12/4/2012 | 7:58:54 PM
re: Blue Leaf: From Gas to Glass LightReading,

There is an obvious mistake in your story. I would really appreciate some better editorial supervision and revue of your stories. Most print media companies employ "fact checkers". You could use one or 2 of these.

There are more than 3 tunable laser vendors targeting 1550nm out there! The accurate statement would have been that there are only 3 companies pursuing tunable VCSELs in 1550nm range. There are several companies targeting tunable laser sources in 1550nm range using other approaches than VCSEL. These include: Iolon, New Focus, Agility, ADC, Agere, Nortel (non Coretek approach....Nortel has 2 approaches to tunables), Fujitsu, and a few more start ups like Sparkolor, Intense Photonics, etc. etc.

Please check these kinds of basic facts before you publish. Without that fact checking, it misleads readers into thinking that this new announced company is more significant than it is.

Sad part about it is that this false statement in your story would have been particularly easy to check had you bothered: Lightreading itself has written extensively on many of these other tunable laser vendors in the 1550nm space. 1 is even on LR top 10 pre-IPO list!

Sailboat
Scott Raynovich 12/4/2012 | 7:58:50 PM
re: Blue Leaf: From Gas to Glass Sailboat!!! There was a word missing!! We fixed it!!
ownstock 12/4/2012 | 7:56:10 PM
re: Blue Leaf: From Gas to Glass Blue Leaf aka
Informed Diagnostics, Inc.
1050 Duane Avenue, Suite I
Sunnyvale, CA 94086-2626
(408) 524-0550
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