Minimum pulse width for signals that go through copper interconnects or optic fibers

[master_picengineer]

Hi members,
Please can someone tell me
1- what is the minimum pulse width withought degradation for signals used to carry information trough copper interconnects in 65 nm tech.
2- The same question but now through optic fibers

Thanks in advance.

 

[muralicrl]

Re: Pulse Width

Hi,

In case of optical fibre the transmission signal pulsewidth/frequency is limited by optical wavelength.

If you need more details, contact me.

Regards,

N.Muralidhara

 

[hmsheng]

Pulse Width

The less the pulse width the more bandwidth is needed to transmit it without distortion. The bandwidth of the copper interconnects is decided by the parasitic resistance and capacitance. So the parasitic RC should be known first to calculate the mimimum pulse width. The bandwidth of a optic fibers is very large compared with copper interconnects.