The OPRAS antenna reported in  is locally manipulated by a diode laser differently to our optically controlled antenna that is remotely reconfigured by using a dedicated optical link from the central office to the remote antenna unit.
Christodoulou, "Demonstration of a cognitive radio front end using an optically pumped reconfigurable antenna system (OPRAS)," IEEE Transactions on Antennas and Propagation, vol.
Each place was staffed by two opras
or oyas (translated usually as marshals, dukes, or peers), seven officers of Phra Narai's household and a body of Siamese troops who patrolled constantly to prevent "noise and disorder." Dinner was served every day in Euoropean style for at least thirty guests.(51) As a special mark of distinction, the rest-houses were painted red to indicate the the ambassador was to "be treated as [the king of Siam's] own person, there being only the Royal Houses of that colour."(52) Finally, a large residence was built a league or two down liver from Ayutthaya, where the whole party was to lodge until Chaumont's first audience with the king.(53) After that, the ambassador and his retinue would be moved into the city for the remainder of their stay.