Jeffery,

Check out standard EN 60825-2.

EN 60825-1 deals with the products (transmitters) themselves.  EN 60825-2 deals 
with their integration into a Fiber Optic system.

Chris Maxwell | Design Engineer - Optical Division
email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024

NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA
web www.nettest.com | tel +1 315 797 4449 | 


  

> -----Original Message-----
> From: Peter Merguerian [SMTP:pmerguer...@itl.co.il]
> Sent: Friday, June 28, 2002 8:27 AM
> To:   'Collins, Jeffrey'; 'emc-p...@majordomo.ieee.org'
> Subject:      RE: Lasers in Fiber Optic Comm Networks
> 
> 
> Jeffrey,
> 
> The telecom system manufacturer's responsibility ends at the system level.
> However, if manufacturer can see that the interconnection may yield higher
> laser class, I recommend that he puts a warning statement in the
> installation instructions and specify that the system may need to be
> installed in a Restricted Access Location.
> 
> 
> This e-mail message may contain privileged or confidential information. If
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> 
> 
> PETER S. MERGUERIAN
> Technical Director
> I.T.L. (Product Testing) Ltd.
> 26 Hacharoshet St., POB 211
> Or Yehuda 60251, Israel
> Tel: + 972-(0)3-5339022  Fax: + 972-(0)3-5339019
> Mobile: + 972-(0)54-838175
> http://www.itl.co.il
> http://www.i-spec.com
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Collins, Jeffrey [mailto:jcoll...@ciena.com]
> Sent: Friday, June 28, 2002 10:45 AM
> To: 'emc-p...@majordomo.ieee.org'
> Subject: Lasers in Fiber Optic Comm Networks
> 
> 
> 
> Group,
> 
> And yet another laser question. How would one certify/classify Optical Gear
> in "Europe Only" where the transceiver may very well be a class 1 laser, but
> because you multiplex multiple channels before launching on the line coming
> out of the CO, your aggregate power can be significantly higher than class
> 1?
> 
> This is common in DWDM designs and to make this even worse the power can be
> further boosted with an amplifier down the line. So what you may start with
> inside your "Controlled Access Environment" is a Class 1 laser but end up
> with something much higher than class 1 down the line.
> 
> How would you classify/certify this product by laser class? How would you
> protect the person working outside of the CO from the hazard? 
> Has anyone used or heard of using S/W as a safety device as opposed to using
> Automatic Laser Shutdown (ALS) or Automatic Power Reduction (APR)
> devices?
> 
> Where does the Telecom manufacturer's responsibility for the system end? Is
> it at the system or at the other end of the fiber connection including
> everything in between?
> 
> 
> All input is appreciated.
> 
> 
> Jeffrey Collins
> Sr. HW Engineering Manager 
> EMC/ NEBS/ Safety/ Reliability
> CIENA  Core Switching Division
> 10480 Ridgeview Court, Cupertino, CA. 95014
> (408) 366-4806, Fax (408) 366-4866
> jcoll...@ciena.com
> http://www.ciena.com
> 
> 
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