Analog into the NJB3, no digital patching possible.
Optical patching - a simple optical splitter *might* do the trick, but some folks have found halving the strength of the optical signal feeding the NJB3 causes problems.
If the NJB3 is being fed from an ADC's coax S/PDIF or AES/EBU output through a digital format converter, then yes, using a coax S/PDIF or AES/EBU splitter and a coax S/PDIF <-> optical or AES/EBU <-> optical digital format converter.
Since most digital patches are coax S/PDIF, a simple barrel splitter available at Radio Shack and a Hosa ODL-276 coax S/PDIF <-> optical digital format converter would do the trick.
The only real catch is that since the barrel splitter simply splits the signal in half, the signal may not be strong enough after just a couple splits, meaning long patch chains aren't real likely to succeed.
Laptop - depends on how the signal is being fed to the laptop. If coax S/PDIF or AES/EBU, then same as above. If USB or firewire, I don't think so.