CIRCUIT WITH PASSIVE COMPONENTS FOR HIGH-SPEED DRIVE OF AN OPTOELECTRONIC DEVICE

• US 20120235587A1
• Filed: 11/24/2010
• Published: 09/20/2012
• Est. Priority Date: 12/01/2009
• Status: Abandoned Application

• Current Assignee: Centre National De La Recherche Scientifique, Institut national des sciences appliquées de Toulouse
• Original Assignee: Institut national des sciences appliquées de Toulouse
• Inventors: Marie, Xavier, Binh, Phi Hoa, Renucci, Pierre, Truong, Viet Giang
• Application Number:
  US13/513,008
• Publication Number:
  US 20120235587A1
• Time in Patent Office: Days
• US Class Current: 315/201
• CPC Class Codes: H03K 17/0412 by measures taken in the control circuit
• CPC Class Codes: H03K 5/08 by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding H03K5/07 takes precedence; comparing one pulse with another H03K5/22; providing a determined threshold for switching H03K17/30
• CPC Class Codes: H03K 5/1534 Transition or edge detectors
• CPC Class Codes: H04B 10/11 Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04B 10/502 LED transmitters

Abstract

A circuit for the ultra-quick control of an optoelectronic device, includes a generator of voltage pulses having a pulse duration of less than 400 ps, and a circuit (17) for shaping control pulses including: an output suitable for being connected in series to a line terminal (13) of the optoelectronic device, and an input connected to the voltage-pulse generator and receiving the voltage pulses formed by the latter, between a terminal of the input and a terminal of the output, mounted in parallel in relation to one another: a first branch (20) made up of a passive rectifier circuit (22a, 22b) having non-zero threshold voltage and, in series in the first branch in forward direction relative to the line terminal (13) of the optoelectronic device, a second capacitive branch (21).

Claims

1-15. -15. (canceled)

16. Circuit for high-speed drive of an optoelectronic device including at least one optoelectronic diode (12), wherein said circuit comprises:

a voltage square wave pulses generator (15, 16) exhibiting edges of duration shorter than 400 ps,

a pulse-shaping circuit (17) for shaping of driving pulses of the optoelectronic device, said pulse-shaping circuit (17) including;

an output (18) that is suitable to be connected to the optoelectronic device,

and an input (19) connected to the voltage square wave pulses generator (15, 16) and receiving the voltage square wave pulses formed by said generator,

between a terminal (19a or 19b) of said input and a terminal (18a or 18b) of said output connected in series to a terminal (13 or 14) for energizing said optoelectronic device, connected in parallel in relation to one another;

a first branch (20) made up of a passive rectifier circuit (22a, 22b) with non-zero threshold voltage, said passive rectifier circuit being in series in the first branch and in the forward direction in relation to said terminal (13 or 14) for energizing the optoelectronic device,

a second capacitive branch (21).

17. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage is made up of at least one diode in series in the first branch and in the forward direction in relation to said terminal (13 or 14) for energizing the optoelectronic device.

18. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage exhibits a total threshold voltage greater than 0.5 V and a dynamic resistance less than 50Ω

.

19. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage includes at least one Schottky diode (22a, 22b).

20. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage is made up of a plurality of Schottky diodes (22a, 22b) in series.

21. Circuit as claimed in claim 20, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage is made up of two Schottky diodes in series, and in that each Schottky diode (22a, 22b) exhibits a threshold voltage of the order of 0.3 V to 0.35 V, a dynamic resistance of the order of 6Ω

and a pass-band of the order of 10 GHz.

22. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage includes at least one PIN diode.

23. Circuit as claimed in claim 16, wherein said passive rectifier circuit (22a, 22b) with non-zero threshold voltage is made up of a PIN diode exhibiting a threshold voltage of the order of 0.9 V to 1 V, a dynamic resistance of the order of 0.5Ω

to 1Ω and

a pass-band of the order of 1 GHz to 5 GHz.

24. Circuit as claimed in claim 16, wherein the capacitance of the second branch (21) is between 0.2 times and 2 times the capacitance of the optoelectronic device under zero voltage.

25. Circuit as claimed in claim 16, wherein the capacitance of the second branch (21) is between 10 pF and 200 pF.

26. Circuit as claimed in claim 16, wherein the voltage square wave pulses generator (15, 16) is suitable to produce voltage square wave pulses of peak amplitude between 0 V and 4 V of duration between 250 ps and 4 ns.

27. Circuit as claimed in claim 16, wherein the voltage square wave pulses generator (15, 16) is suitable to provide a DC bias voltage Vc of value less than the total threshold voltage of the first branch (20) and of each optoelectronic diode (12) of the optoelectronic device.

28. Circuit as claimed in claim 16, wherein the voltage square wave pulses generator (15, 16) is suitable to provide a DC bias voltage Vc between 0 V and 3 V.

29. Circuit as claimed in claim 16, wherein the voltage square wave pulses generator (15, 16) includes a device (16) for shaping of voltage square wave pulses with a switching diode (32) with electrostatic memory.

30. Circuit as claimed in claim 29, wherein the voltage square wave pulses generator (15, 16) includes a periodic-signal generator (15) energizing said device (16) for shaping of voltage square wave pulses.