Optical waveguides – With optical coupler – Switch
Patent
1991-11-18
1993-12-14
Lee, John D.
Optical waveguides
With optical coupler
Switch
385 12, 385 14, G02B 612
Patent
active
052710742
ABSTRACT:
A cryogenic signal coupling apparatus includes a laser which launches optical power into an integrated optical waveguide (IOW) within a cryogenic region via an imaging lens. This optical power is then equally split by a passive optical splitter, and fed to one or more 1.times.2 IOW devices. Within the cryogenic region, a plurality of infrared sensing photodiodes provide electrical signal outputs in response to optical stimuli, which signal outputs are amplified and selected by a multiplexing arrangement for application as the modulating signal to one of the 1.times.2 IOW's. Control electronics also within the cryogenic region supply timing and control information to the other electronics therein. The IOW's modulate their input optical power in accordance with their respective modulating electrical input signals, and provide differential optical outputs which are directed across the thermal barrier to individual differential optical receivers. In one embodiment, the electrical signal from the light sensors is selected by an electrical multiplexer for application as the modulating signal to a single optical modulator, while in a second embodiment, there is disclosed an optical modulator associated with each light sensor, and the source light power to be modulated is selectively switched to only one modulator.
REFERENCES:
patent: 4936645 (1990-06-01), Yoon et al.
patent: 5031235 (1991-07-01), Raskin et al.
patent: 5111517 (1992-05-01), Riviere
Dawson Walter F.
Heartney Phan T.
Lee John D.
Raytheon Company
Sharkansky Richard M.
LandOfFree
Integrated optical waveguide apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated optical waveguide apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated optical waveguide apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1712471