Filter tap for optical communications systems

Coherent light generators – Particular component circuitry – Optical pumping

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

350 9629, 350 9616, 372 3, 372 92, G02B 626, G02B 602, H01S 330, H01S 308

Patent

active

047688491

ABSTRACT:
A filter tap for optical communication systems includes an optical resonant cavity comprising generally parallel, facing dielectric mirrors spaced to permit resonance in a selected band of channels. Optical signals from an input portion of a main trunk line carrying optical signals on a plurality of bands are coupled to one of the mirrors at an end face of the resonant cavity and are coupled from the one mirror to an output portion of the main trunk line with minimal reduction in optical signals in nonselected bands. Optical signals in the selected band are coupled from the other of the mirrors on the other end face of the resonant cavity to a branch line. In one preferred embodiment, the cavity is a finer optic resonant cavity and trunk line optical fibers are coupled directly to one of the mirrors of the cavity. Power is coupled from the input portion to the output portion of the trunk line by evanescent coupling. A second resonant cavity can couple power in the same or a different band to a second branch line. Optical pumping can be utilized at the filter tap for optical signal amplification. The filter tap can include a macro-optical resonant cavity and lenses for directing optical signals between optical fiber cores and the resonant cavity.

REFERENCES:
patent: 4315666 (1982-02-01), Hicks, Jr.
patent: 4317614 (1982-03-01), Palmer
patent: 4342499 (1982-08-01), Hicks, Jr.
patent: 4515431 (1985-05-01), Shaw et al.
patent: 4546476 (1985-10-01), Shaw et al.
patent: 4557552 (1985-12-01), Newton et al.
patent: 4577924 (1986-03-01), Mathis
patent: 4592043 (1986-05-01), Williams
patent: 4676583 (1987-06-01), Hicks, Jr.
patent: 4720160 (1988-01-01), Hicks, Jr.
Luc B. Jeunhomme, Single-Mode Fiber Optics, Marcel Dekker, Inc., 1983, pp. 180-184.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Filter tap for optical communications systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter tap for optical communications systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter tap for optical communications systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1603058

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.