Optical couplers  can only transfer a signal, not power.  There has to be a separate power source on the output side of the coupler.

https://www.tutorialspoint.com/signals-and-systems-energy-and-power-signals
https://learn.digilentinc.com/Documents/130
Both energy and power signals are mutually exclusive, i.e., no signal can be both power signal and energy signal.
A signal is neither energy nor power signal if both energy and power of the signal are equal to infinity.
All practical signals have finite energy; thus they are energy signals.
In practice, the physical generation of power signal is impossible since its requires infinite duration and infinite energy.
All finite duration signals of finite amplitude are energy signals.
Sum of an energy signal and power signal is a power signal.
A signal whose amplitude is constant over infinite duration is a power signal.
The energy of a signal is not affected by the time shifting and time inversion. It is only affected by the time scaling.

particle-wave (which represents power/which energy) uncertainity
No conditioning : no rule

https://en.wikipedia.org/wiki/Black_silicon
Cooper pair  https://en.wikipedia.org/wiki/Cooper_pair  https://en.wikipedia.org/wiki/Valence_electron

Recombination- actio/reactio - time window
https://pv-manufacturing.org/metrology/recombination-processes/

https://en.wikipedia.org/wiki/Metamaterial

(solution : Femto-diode-array  !?) alternatively http://www.novasolix.com/

and   thermo-photo cells or thermionic cells thermo-phono cells