Variable attenuator optical add/drop devices

Details Variable attenuator optical add/drop devices Variable attenuator optical add/drop devices

2005-08-30

2005-08-30

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

Accessories

Attenuator

C385S024000, C385S034000, C385S014000, C385S031000

Reexamination Certificate

active

06937809

ABSTRACT:
Optical devices for adding/dropping an optical signal with a particular wavelength are disclosed. According to embodiment, a reflection channel module including a grin lens and a bandpass filter is employed to transmit the optical with a particular wavelength and reflect all other channel signals. The transmitted signal is regulated by an optical regulator (e.g. variable optical attenuator) before it is output from the device via a grin lens. As a result, a regulated channel can be dropped or added depending on an application.

REFERENCES:
patent: 5745634 (1998-04-01), Garrett et al.
patent: 6246812 (2001-06-01), Liu et al.
patent: 6292616 (2001-09-01), Tei et al.
patent: 6381049 (2002-04-01), Xu et al.
patent: 6553175 (2003-04-01), Jaspan

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