[Homer-users] Re: bent fiber optic
mrcheung at mdanderson.org
mrcheung at mdanderson.org
Tue Jul 24 10:39:31 EDT 2007
Hi,
Where could I get optical fibers that could be bent 90 degrees?
Thanks, Rex
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Today's Topics:
1. Optical Fibres suggestions (Christopher Soraghan)
2. Re: Optical Fibres suggestions (pietro scatturin)
3. RE: Optical Fibres suggestions (Xiaofeng "Steve" Zhang)
4. Re: Optical Fibres suggestions (Dennis Hueber)
5. fiber NA (Bryan McLaughlin)
----------------------------------------------------------------------
Message: 1
Date: Mon, 18 Jun 2007 10:08:18 +0100
From: Christopher Soraghan <christopher.j.soraghan at nuim.ie>
Subject: [Homer-users] Optical Fibres suggestions
To: "Homer-users at nmr. mgh. harvard. edu"
<Homer-users at nmr.mgh.harvard.edu>
Message-ID:
<ADECLNODFALCEMJJDDODOEDDCFAA.christopher.j.soraghan at nuim.ie>
Content-Type: text/plain; charset=iso-8859-1
Hi All,
I have a relevant NIRS query but not directly related to HomER.
Can anybody suggest to me the optical fibres used for NIRS including
company
name and contact details and any other information you have on them
(price/specifications)? Any information would be greatly appreciated.
Many thanks,
Chris
*********
------------------------------
Message: 2
Date: Mon, 18 Jun 2007 12:43:40 +0200
From: pietro scatturin <p.scatturin at unipd.it>
Subject: Re: [Homer-users] Optical Fibres suggestions
To: christopher.j.soraghan at nuim.ie, homer-users at nmr.mgh.harvard.edu
Message-ID: <6.2.3.4.1.20070618123908.041a97e8 at pop.unipd.it>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Example :
http://www.specialtyphotonics.com/pdf/products/088_089.pdf ;
depends from bending ( 90 deg ) prefered 200 or 400 micron core
bye pietro
At 11:08 AM 6/18/2007, you wrote:
>Hi All,
>
>I have a relevant NIRS query but not directly related to HomER.
>
>Can anybody suggest to me the optical fibres used for NIRS including
company
>name and contact details and any other information you have on them
>(price/specifications)? Any information would be greatly appreciated.
>
>
>
>Many thanks,
>Chris
>
>*********
>
>
>
>
>_______________________________________________
>Homer-users mailing list
>Homer-users at nmr.mgh.harvard.edu
>https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
------------------------------
Message: 3
Date: Mon, 18 Jun 2007 09:39:58 -0400
From: "Xiaofeng \"Steve\" Zhang" <xxz at engr.psu.edu>
Subject: RE: [Homer-users] Optical Fibres suggestions
To: <christopher.j.soraghan at nuim.ie>,
<homer-users at nmr.mgh.harvard.edu>
Message-ID: <001301c7b1ae$29daa7d0$343e7680 at engr.psu.edu>
Content-Type: text/plain; charset="us-ascii"
Hi Chris,
Depending on specific applications, people use 65- to 400-micron fibers.
I'd
say 400-micron multimode fiber is probably the best to start off with for
"regular" NIRS. You also need to make sure that the spectrum width of the
fiber covers your wavelength, i.e. "NIR fiber". Here is a paper that
details
what we've been using:
X.Zhang,Y.Toronov,and A.Webb, Integrated measurement system for
simultaneous
functional magnetic resonance imaging and diffuse optical tomography in
human brain mapping, Rev. Sci. Instrum., vol. 77, 114301 (2006)
Hope it helps,
Steve
-----Original Message-----
From: homer-users-bounces at nmr.mgh.harvard.edu
[mailto:homer-users-bounces at nmr.mgh.harvard.edu] On Behalf Of Christopher
Soraghan
Sent: Monday, June 18, 2007 5:08 AM
To: Homer-users at nmr. mgh. harvard. edu
Subject: [Homer-users] Optical Fibres suggestions
Hi All,
I have a relevant NIRS query but not directly related to HomER.
Can anybody suggest to me the optical fibres used for NIRS including
company
name and contact details and any other information you have on them
(price/specifications)? Any information would be greatly appreciated.
Many thanks,
Chris
*********
_______________________________________________
Homer-users mailing list
Homer-users at nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
------------------------------
Message: 4
Date: Mon, 23 Jul 2007 10:07:30 -0500
From: Dennis Hueber <dmhueber at iss.com>
Subject: Re: [Homer-users] Optical Fibres suggestions
To: homer-users at nmr.mgh.harvard.edu
Cc: christopher.j.soraghan at nuim.ie
Message-ID: <46A4C432.9090608 at iss.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Just a note concerning the ISS instruments and fibers. 200 to 400 micron
core is best for the sources, because the coupling of the lasers into
the fiber may be a problem. Also, very small bundles have been used. The
efficiency is not as good but is consistence. If you are building your
own instrument and you want to use much smaller and flexible single
fibers. You could get the lasers coupled by Oz-Optics and use 50 or 62.5
mircon fiber, which as just about as flexible as single-mode. We have
done this with prototypes.
About NIRS retransmission. Just about any optical-fiber will work in
short lengths (a few feet). If you want long fibers pay attention the
spectrum supplied by the manufacturer. Some transmit NIR better than
others.
Dennis Hueber
ISS Inc.
pietro scatturin wrote:
> Example :
> http://www.specialtyphotonics.com/pdf/products/088_089.pdf ; depends
> from bending ( 90 deg ) prefered 200 or 400 micron core
> bye pietro
>
>
> At 11:08 AM 6/18/2007, you wrote:
>> Hi All,
>>
>> I have a relevant NIRS query but not directly related to HomER.
>>
>> Can anybody suggest to me the optical fibres used for NIRS including
>> company
>> name and contact details and any other information you have on them
>> (price/specifications)? Any information would be greatly appreciated.
>>
>>
>>
>> Many thanks,
>> Chris
>>
>> *********
>>
>>
>>
>>
>> _______________________________________________
>> Homer-users mailing list
>> Homer-users at nmr.mgh.harvard.edu
>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
>
> _______________________________________________
> Homer-users mailing list
> Homer-users at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
------------------------------
Message: 5
Date: Tue, 24 Jul 2007 11:09:35 +0100
From: "Bryan McLaughlin" <bm304 at cam.ac.uk>
Subject: [Homer-users] fiber NA
To: <homer-users at nmr.mgh.harvard.edu>
Message-ID: <000001c7cdda$bce2e720$44aea981 at donkey>
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