Granted Patent B2

US 7,250,590 · App. 10/892,777 · Granted Jul 31, 2007

Abstract

Claims (29)

1. An optoelectronic arrangement, comprising:

a transmission component, wherein the transmission component consists of a single light emitting diode or a single laser diode configured to emit electromagnetic radiation for data transmission, wherein the electromagnetic radiation comprises a first portion for data transmission to an optical waveguide through a coupling zone and a second portion;

a receiving component configured to detect the second portion of the radiation emitted from the transmission component; and

a transparent material at least partially surrounding the transmission component and the receiving component and which provides a boundary surface between the optoelectronic arrangement and an environment external thereto,

wherein the transparent material is formed as a transparent encapsulation material;

wherein the second portion of the radiation detected by the receiving component is emitted from the transmission component and reflected in the transparent material or at the boundary surface of the transparent material back to the receiving component.

2. The arrangement according to claim 1 , wherein the transparent material forms a housing for the optoelectronic arrangement, and wherein the light which is emitted from the transmission component is partially reflected at the boundary surface of the housing to the environment.

3. The arrangement according to claim 1 , wherein the transmission component is arranged on the receiving component and covers at most a portion of the photosensitive area of the receiving component.

4. The arrangement according to claim 3 , wherein the receiving component is arranged on a leadframe.

5. The arrangement according to claim 1 , wherein the transmission component comprises a prefabricated chip.

6. The arrangement according to claim 1 , wherein the receiving component comprises a prefabricated chip.

7. The arrangement according to claim 1 , wherein the receiving component comprises a monitor diode configured to detect exclusively the second portion of the radiation which is emitted from the transmission component.

8. An optoelectronic arrangement, comprising:

a transmission component configured to emit electromagnetic radiation;

a receiving component configured to detect a portion of the radiation emitted from the transmission component; and

a transparent material at least partially surrounding the transmission component and the receiving component and which provides a boundary surface between the optoelectronic arrangement and an environment external thereto,

wherein the portion of the radiation detected by the receiving component is emitted from the transmission component and reflected in the transparent material or at the boundary surface of the transparent material back to the receiving component, and wherein the receiving component is configured for bidirectional data transmission using a half-duplex method and comprises a photodiode configured to operate as a monitor diode detecting reflected light during transmission, and as a receiving photodiode during reception.

9. A method for controlling the output power of a transmission component, wherein the transmission component consists of a single light emitting diode or a single laser diode by means of a receiving component which detects a portion of radiation which is emitted from a transmission component, comprising:

at least partially encapsulating the transmission component and the receiving component in a transparent material formed as a transparent encapsulation material;

detecting, with the receiving component, radiation which is emitted from the transmission component for data transmission purposes and which is reflected in the transparent material or at a boundary surface of the transparent material;

determining a light power of the transmission component from the detected radiation of the receiving component; and

altering a driver current to the transmission component in response to the determined light power so that an instantaneous light power of the transmission component corresponds to a nominal light power for the transmission component.

10. The method according to claim 9 , wherein the method for controlling the output power is used in a unidirectional data transmission, and the receiving component is used exclusively as a monitor diode by detecting the reflected radiation.

11. A method for controlling the output power of a transmission component in a bidirectional data transmission using a half-duplex method by means of a receiving component which detects a portion of radiation which is emitted from a transmission component, comprising:

at least partially arranging the transmission component and the receiving component in a transparent material;

detecting, with the receiving component, radiation which is emitted from the transmission component for data transmission purposes and which is reflected in the transparent material or at a boundary surface of the transparent material;

determining a light power of the transmission component from the detected radiation of the receiving component; and

altering a driver current to the transmission component in response to the determined light power so that an instantaneous light power of the transmission component corresponds to a nominal light power for the transmission component,

and wherein the receiving component is used as a monitor diode by detecting the reflected radiation during a transmission mode, and is used as a receiving photodiode during a reception mode.

Assignments (11)