光 ひかり通信 つうしん技術 ぎじゅつ

hikaritsūshingijutsu

1. Not optical communication technology.

1. Optical communication technology was.

1. Optical communication technology with/by means of.

1. Optical communication technology; Optical communication techniques

1. It is not optical communication technology.

1. It's not optical communication technology.

1. Optical communication technology was.

1. Optical communication technology.

1. Is not optical communication technology.; It is not optical communication technology.

1. Wasn't optical communication technology.

1. Probably optical communication technology.

1. Was not optical communication technology.

1. Wasn't optical communication technology.

1. Probably optical communication technology.; It will likely be optical communication technology.

1. Was not optical communication technology.

1. If/when optical communication technology…; If optical communication technology were…

1. If optical communication technology; Were optical communication technology

1. If optical communication technology; When optical communication technology