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US 7,031,612 B2Granted
Optical transponders and transceivers
AssigneeMultiplex Company, Inc.
InventorsKang-Yih Liou, Tawee Tanbun-Ek, Won-Tien Tsang, Liang David Tzeng
Life of this patent
Estimating the term…
Abstract
An optical transponder/transceiver for intermediate range (e.g., 10-50 km) optical communication applications utilizes an electroabsorption modulated laser for the transmitting device. Preferably, the laser operations at a wavelength of approximately 1310 nm and comprises an electroabsorption modulated Fabry-Perot laser.
Claims11
An optical transponder module for providing transport of optical communications between a first network and a second network over an intermediate range optical communication system, the module comprising
- a front-end transceiver for receiving input optical communication from the first network and converting said input into an electrical data output, and receiving input electrical data from the second network and converting said electric input into an output optical signal and transmitting said output optical communication to said first network;
- an intermediate range optical transmitter, responsive to the electrical data output from the front-end transceiver for converting said electrical data into an optical output signal for transmission over said intermediate range optical communication system to said second network;
- and
- an intermediate range optical receiver, responsive to optical data input from the second network for converting said optical input into an electrical data signal applied as an input to said front-end transceiver for conversion to an optical output signal transmitted to said first network,
- wherein said intermediate range optical transmitter comprises an electroabsorption modulated laser including an electroabsorption modulator section responsive to the electrical data output from said front-end transceiver and a Fabry-Perot laser section responsive to the electroabsorption modulator for providing a modulated optical output signal, the electroabsorption modulator section comprising a first multiple quantum well active region comprising a plurality of barrier layers and a plurality of well layers, the Fabry-Perot laser device section comprising a second multiple quantum well active region comprising a plurality of barrier layers and a plurality of well layers, wherein each of said barrier layers and said well layers of said second multiple quantum well active region are thicker than each of said barrier layers and said well layers of said first multiple quantum well active region, respectively.
2 more elements
An optical transceiver for operation in an intermediate range optical communication system, said transceiver comprising
- an intermediate range optical transmitter responsive to an electrical data input signal for converting said electrical data into an optical output signal for transmission over said intermediate range optical communication system;
- and
- an intermediate range optical receiver, responsive to optical data input from the intermediate range optical communication system and converting said optical data input into a received electrical data signal,
- wherein said intermediate range optical transmitter comprises
- an electroabsorption modulated laser including an electroabsorption modulator section including a first multiple quantum well active region responsive to the electrical data input signal and
- a Fabry-Perot laser section including a second multiple quantum well active region responsive to the electroabsorption modulator for providing a modulated optical output signal,
- the Fabry-Perot laser device section and the electroabsorption modulator section forming a monolithic structure having an isolation trench for reducing electrical cross-talk between the laser section and the electroabsorption modulator.
4 more elements
An optical transponder module, the module comprising
- an intermediate range optical transmitter, responsive to electrical data for converting the electrical data into an optical output signal for transmission,
- the intermediate range optical transmitter comprising
- an electroabsorption modulated laser including an electroabsorption modulator section responsive to the electrical data and
- a Fabry-Perot laser section responsive to the electroabsorption modulator for providing a modulated optical output signal,
- the electroabsorption modulator section comprising a first multiple quantum well active region comprising a plurality of barrier layers and a plurality of well layers,
- the Fabry-Perot laser device section comprising a second multiple quantum well active region comprising a plurality of barrier layers and a plurality of well layers,
- the Fabry-Perot laser device section and the electroabsorption modulator section forming a monolithic structure,
- each of the barrier layers and the well layers of the second multiple quantum well region are thicker than each of the barrier layers and the well layers of the first multiple quantum well active region, respectively.
5 more elements
Dependencies are inferred from the claim text.