Title:
INTEGRATED TRANSMITTING-RECEIVING CIRCUIT FOR AN OPTICAL DUPLEX SYSTEM
Document Type and Number:
WIPO Patent Application WO1999030195
Kind Code:
A3
Abstract:
An integrated transmitting-receiving circuit (transceiver) designed as two complementary types for an optical duplex system with two light waves with different operating wavelengths to be transmitted in opposite directions via an optical fibre has a wavelength-independent optical switch designed as a Y structure formed of waveguide paths. The first path of the switch is designed as a connecting waveguide between the optical fibre and the two other paths, the second path leads to the transmission laser designed according to the complementary type for the corresponding operating wavelength, and the third path leads to a photodetector system with two photodetector sections optically connected in series, designed each for one of the two operating wavelengths and electrically independent of one another. The photodetector section designed for the shorter operating wavelength is arranged between the switch and the photodetector section designed for the longer operating wavelength.
Inventors:
HAMACHER MICHAEL (DE)
HEIDRICH HELMUT (DE)
KAISER RONALD (DE)
HEIDRICH HELMUT (DE)
KAISER RONALD (DE)
Application Number:
PCT/DE1998/003717
Publication Date:
July 22, 1999
Filing Date:
December 10, 1998
Export Citation:
Assignee:
HERTZ INST HEINRICH (DE)
HAMACHER MICHAEL (DE)
HEIDRICH HELMUT (DE)
KAISER RONALD (DE)
HAMACHER MICHAEL (DE)
HEIDRICH HELMUT (DE)
KAISER RONALD (DE)
International Classes:
G02B6/12; G02B6/42; H01L31/12; H04B10/40; (IPC1-7): G02B6/42; G02B6/12; H01L27/15; H04B10/24
Foreign References:
| EP0617471A2 | 1994-09-28 | |||
| EP0762157A2 | 1997-03-12 | |||
| EP0284910A1 | 1988-10-05 | |||
| US4348074A | 1982-09-07 | |||
| EP0598966A1 | 1994-06-01 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 011, no. 337 (P - 633) 5 November 1987 (1987-11-05)
KUHARA Y ET AL: "OPTICAL WDM TRANSCEIVER MODULE USING WAVELENGTH-SELECTIVE COUPLER AND WDM-PD FOR OPTICAL ACCESS NETWORKS", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 15, no. 4, 1 April 1997 (1997-04-01), pages 704 - 709, XP000691038
PATENT ABSTRACTS OF JAPAN vol. 005, no. 032 (P - 050) 27 February 1981 (1981-02-27)
KUHARA Y ET AL: "OPTICAL WDM TRANSCEIVER MODULE USING WAVELENGTH-SELECTIVE COUPLER AND WDM-PD FOR OPTICAL ACCESS NETWORKS", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 15, no. 4, 1 April 1997 (1997-04-01), pages 704 - 709, XP000691038
PATENT ABSTRACTS OF JAPAN vol. 005, no. 032 (P - 050) 27 February 1981 (1981-02-27)
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