translate English to French: The photonics sector is emerging as a key market for the 21st century and it has been estimated that, world-wide, this market will be worth at least $230 billion by the year 2003.
La photonique est un secteur en devenir qui constituera un marché clé de l'économie du XXIe siècle. On estime que le marché mondial de la photonique atteindra 230 milliards d'ici 2003.