Compact optical multiplexer/demultiplexer

Details Compact optical multiplexer/demultiplexer Compact optical multiplexer/demultiplexer

2005-09-06

2005-09-06

Sedighian, M. R. (Department: 2633)

Optical communications

Multiplex

Wavelength division or frequency division

C398S085000, C398S086000

Reexamination Certificate

active

06941072

ABSTRACT:
The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package, the present invention utilizes reflective prisms to steer the reflected beams to provide a lateral shift in the beam path that ensures that the necessary space is provided between the input/output ports. Devices including a single adjustable filter are disclosed, along with devices having a plurality of filters.

REFERENCES:
patent: 4244045 (1981-01-01), Nosu et al.
patent: 4343532 (1982-08-01), Palmer
patent: 5724165 (1998-03-01), Wu
patent: 5808763 (1998-09-01), Duck et al.
patent: 6008920 (1999-12-01), Hendrix
patent: 6078710 (2000-06-01), Li et al.
patent: 6567578 (2003-05-01), Zhang et al.

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