Re: Temperature and fiber

Michelot wrote:
Bonjour,

(1) Would you have please a real value for a temperature parameter of
a specific fiber?

I took a coefficient a 30 ps/km/K. That is what I found.


(2) I am not sure that we have to write "ps/km/K" or "ps.km.K". Thanks
for your opinion.

Best regards,
Michelot

That's just the temperature coefficient of optical path length in quartz, about 10**-5/K. (Almost all types of glass are near that value--TC_opl = dn/dT + n*CTE--quartz has a high dn/dT but low CTE, whereas other glasses have lower dn/dT and higher CTE.) Most of the time, if you have a fibre application for which that matters, you'll have a much worse time with etalon fringes and scatter than with temperature coefficient.

Cheers,

Phil Hobbs
.

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