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Re: AW: LF: Fiber optic components

To: [email protected]
Subject: Re: AW: LF: Fiber optic components
From: Gerhard Hickl <[email protected]>
Date: Thu, 11 Feb 2010 22:20:10 +0100
In-reply-to: <38A51B74B884D74083D7950AD0DD85E82A1AF5@File-Server-HST.hst.e-technik.tu-darmstadt.de>
References: <[email protected]> <BF4A524700075746A6467658DFC7102C1284D4B33E@ICTS-S-EXC2-CA.luna.kuleuven.be> <op.u7y043pdyzqh0k@pc1> <04336A6FA0CA4A719B65FBD5A3C214D7@AGB> <op.u7y5xabkyzqh0k@pc1> <38A51B74B884D74083D7950AD0DD85E82A1AF5@File-Server-HST.hst.e-technik.tu-darmstadt.de>
Reply-to: [email protected]
Sender: [email protected]
Hello Stefan !

850nm is visible too! It by far not that bright than "visible" light is,
but nevertheless, still visible.

850nm is the typical wavelength used for MultiMode Fiber Connections.
On a 50-62.5 Multimode-Fiber it usually can travel for up to one
kilometer (850m is the nominal distance).

The wavelength I am usually dealing with is 1310 or 1550nm (SDH and WDM
equipment).

So maybe you'll give the 850nm a try. I don't know if these components
are cheaper than the 600nm but visibility is not the problem.

Cheers

OE3GHB

Gerhard
 
 

Am Donnerstag, den 11.02.2010, 20:25 +0100 schrieb Stefan Schäfer:
> Hi Roelof, 
>  
> My hint is http://www.elpro.org/shop.php?p=SFH+757+V for the SFH757V 
> (6,58EUR), which has the same wavelength (660nm) and less maximum forward 
> current. But the forward voltage is higher and maximum current is enough, so 
> perhaps even better than the SFH750, since the power at the same current, say 
> 20mA, is higher. I know, 8XX nm could be better but i want to see the light 
> coming into the shack...
>  
> The SFH350V is available for 2,69 EUR there. 
>  
> 73 es vy gl es pse rprt of your success :-)
>  
> Stefan/DK7FC
> 
> ________________________________
> 
> Von: [email protected] im Auftrag von Roelof Bakker
> Gesendet: Do 11.02.2010 19:06
> An: [email protected]
> Betreff: Re: LF: Fiber optic components
> 
> 
> 
> Hello Tracey, Graham, Robert,
> 
> Thank you all.
> Well, 21 pound is a bit stiff, me think.
> I am not that desperate yet.
> 
> These items are advertised as low cost....
> 
> I have also been looking for the components without the plastic housing.
> However these are also hard to find.
> 
> I will look into it a bit further.
> 
> 73,
> Roelof, pa0rdt
> 
> 
> 



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