Optical fiber two-way transmission system

Abstract

Abstract PURPOSE:To decrease number of components by providing an individual light emitting element at each operating wavelength coupled with a transmission line and a common photodetector to a master set and providing an element in common use for transmission/reception at each operating wavelength coupled to the transmission line to a slave set. CONSTITUTION:The optical signal sent from a light emitting element S1 of the master set A is received by a transmission/reception common use element SR1 of a slave set B1 via an optical fiber F and a star coupler C. Although the signal reaches a transmission/reception common use element SR2 of a slave set B2, since the wavelength differs and no sensitives is arisen, the optical signal is not received by the element SR2 of the slave device B2. On the other hand, the optical signal sent from a light emitting element S2 of the master set A is received by the element SR2 of the slave set B2 via the optical fiber F and the start coupler C. The optical signal sent from the elements SR1, SR2 of the slave sets B1, B2 is received by a photodetector R12 of the master set A.

Inventors

• 👤 Koji Uno
• 👤 浩司 宇野
• 👤 Naoya Aragaki
• 👤 新垣　直也
• 👤 Hishiichi Komiya
• 👤 小宮　菱一

Bibliographic Details