Optical communications – Transmitter and receiver system – Retroreflection
Reexamination Certificate
2007-12-13
2010-12-28
Pascal, Leslie (Department: 2613)
Optical communications
Transmitter and receiver system
Retroreflection
C398S169000, C398S186000
Reexamination Certificate
active
07860401
ABSTRACT:
A method for point-to-point communication over an optical channel is provided. An optical beam is received at a first corner cube modulated retro-reflector. Simultaneously, the optical beam is received at a second corner cube modulated retro-reflector. The first and second corner cube modulated retro-reflectors are adjacent to each other, are co-boresighted, and have an aggregate diameter that is smaller than the far-field Instantaneous Field of View of a receiver. The optical beam is modified by the first corner cube modulated retro-reflector by adding a first modulation to the optical beam, forming a first modulated optical beam. Simultaneously, the optical beam is modified by the second corner cube modulated retro-reflector by adding a second modulation to the optical beam, forming a second modulated optical beam. The first modulated optical beam and the second modulated optical beam combine to form a modified optical wavefront, which is reflected to a sender.
REFERENCES:
patent: 7711441 (2010-05-01), Tillotson
patent: 2008/0247764 (2008-10-01), Lewin et al.
LePore John A.
Pascal Leslie
The Boeing Company
Yee & Associates P.C.
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