Abstract: An analog lightwave communication system comprises at least two optical transmitters for providing optical information signals at different optical wavelengths. A dense wavelength division multiplexer includes at least two inputs for receiving the optical information signals from the optical transmitters and multiplexes the optical information signals to a composite optical signal at an output. Each input of the dense wavelength division multiplexer comprises at least one optical resonant cavity comprising first and second reflecting materials spaced to permit resonance at a selected wavelength. A fiber optic transmission system coupled to the output of the dense wavelength division multiplexer receives the composite optical signal.
Type:
Grant
Filed:
June 21, 1996
Date of Patent:
September 14, 1999
Assignee:
CFX Communications Systems, LLC
Inventors:
Joseph E. Nemecek, Michael J. Noonan, Amaresh Mahapatra
Abstract: A high fidelity, multi-output optical transmission system is configured utilizing a high power continuous wave YAG laser, multiport splitters, and linearized external modulation. An electro-optical modulator design in combination with a c.w. laser, power splits and couplers attains a multi-octave bandwidth transmitter possessing second and third order distortion characteristics of -60 db and a dynamic range >-140 db/Hz. The system includes multiple individually modulated transmitter outputs which effectively provides bandwidth multiplication with full redundancy for increased transmission reliability.
Type:
Grant
Filed:
March 6, 1995
Date of Patent:
February 23, 1999
Assignee:
CFX Communication Systems,LLC
Inventors:
Joseph E. Nemecek, Michael J. Noonan, Amaresh Mahapatra