Optical communications – Optical communication over freee space – Transceivers
Reexamination Certificate
2005-09-13
2005-09-13
Chan, Jason (Department: 2633)
Optical communications
Optical communication over freee space
Transceivers
C398S118000, C398S131000
Reexamination Certificate
active
06944403
ABSTRACT:
Building-to-building over the air transmission of optical data is a growing area of data communications. The fast growing use of bandwidth mandates the use of over the air transmission equipment capable of similar performance as the performance of fiber optic transmission, for distances of 3-10 Km. Transparent transmission is important to enable seamless growth from low data-rare to Gbps rates, and then to Dense Wavelength Division Multiplexed (DWDM) transmission of several wavelengths. The only way to achieve the required performance is with narrow, directable beams. This patent application discloses a Micro-Electro-Mechanical-Systems (MEMS) mirror based, over the air, optical data transmission system. A narrow optical beam is used and a MEMS mirror fine-tunes the aiming of the beam to track building movement, vibrations etc.
REFERENCES:
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patent: 6181474 (2001-01-01), Ouderkirk et al.
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patent: 6577421 (2003-06-01), Cheng et al.
Laor Herzel
Margalit Shlomo
Chan Jason
Nydegger & Associates
Payne David C.
LandOfFree
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