Integrated optical receiver/transmitter

Details Integrated optical receiver/transmitter Integrated optical receiver/transmitter

1993-03-29

1994-09-13

Gonzalez, Frank

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 14, 385 9, 385 24, 385 40, 385 41, 385 45, 385 4, 359152, 359173, G02B 610

Patent

active

053476018

ABSTRACT:
An integrated optical receiver/transmitter (transceiver) 8 has continuous wave (cw) light 16 that enters a Mach-Zehnder optical modulator 10 controlled by a modulator control circuit 12 that provides modulated light 30 along a waveguide 32 to an optical coupler 34 which couples a predetermined portion of the light 30 to a waveguide 44 as light 42 which then exits the transceiver from a port 46. Receive light 90 is accepted at the port 46 and travels along the waveguide 44 to the coupler 34 which couples a predetermined amount of the light 90 to a waveguide 70 as light 92 which is detected by a waveguide-integrated photodetector 72. The photodetector 72 provides a current signal on a line 74 to a receiver circuit 76 which provides a voltage signal indicative of the light 92. Alternatively, the coupler may be passive, thereby not requiring the coupler control circuit, or no coupler at all may be employed and two fibers used for communications with the transceiver 8.

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Monolithic Integration of a 3-GHz Detector/Preamplifier Using a Refractory Gate, Ion-Implanted MESFET Process (Dennis L. Rogers, IEEE Electronics Device Letters, vol. EDL-7, No. 11; Nov. 1986).
Integration of GaAs MESFET Drivers With GaAs Directional-Coupler Electro-optic Modulators (J. H. Abeles et al; Electronic Letters, vol. 23, No. 20; Sep. 1987).
Monolithic Integration of Singlemode A1GaAs Optical Waveguide at 830nm With GaAs E/D-MESFETs Using Planar Multifunctional Epistructure (PME) Approach (S. D. Mukherjee et al, Electronic Letters, vol. 27, No. 24; Nov. 1991).
Monolithic Integration of GaAs-Waveguide Optical Intensity Modulator With MESFET Drive Electronics (R. W. Ade et al; Electronics Letters, vol. 28, No. 8; Apr. 1992).

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