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Interconnect mechanism for connecting a laser driver to a laser

A driver and transmission device technology, applied in the direction of optical waveguide and light guide, can solve the problem of low power efficiency

Inactive Publication Date: 2008-04-30
FINISAR
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the coupling capacitors 225A and 225B make it necessary for the driver output stage 210 and the transducer 201 to use bias currents separately, resulting in inefficient use of power
[0015] As a further disadvantage, the presence of load resistors 223 and 224 means that the driver circuit 210 must use a higher supply voltage because the load resistors may cause a larger voltage drop

Method used

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  • Interconnect mechanism for connecting a laser driver to a laser
  • Interconnect mechanism for connecting a laser driver to a laser
  • Interconnect mechanism for connecting a laser driver to a laser

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Embodiment Construction

[0027] Embodiments disclosed in the present invention relate to an optical transmission circuit comprising: a driver output stage, an electro-optic transducer and a transmission means / interconnection stage for transmitting electrical signals from the driver stage to the electro-optic transducer. The transmission device / interconnection stage can use single termination resistors to provide good termination for the transmission line structure. Therefore, the circuit is driven with a smaller voltage supply and the available voltage headroom is saved. In addition, some embodiments can increase signal and power performance over conventional optical transmission circuits, and can also reduce production costs.

[0028] FIG. 3 shows an optical transmission circuit 300 in which embodiments disclosed herein may be used. Meanwhile, some details of the optical transmission circuit 300 will be described, and the optical transmission circuit 300 is described by way of example only, and is not...

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PUM

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Abstract

A transmission mechanism for transmitting an electrical signal from the output stage of an electro-optic transducer driver to an electro-optic transducer. The transmission mechanism includes the electro-optic transducer, the electro-optic transducer driver and a termination resistor. A first node of the termination resistor is coupled to the first differential input terminal of the electro-optic transducer. A second node of the termination resistor is coupled to the first output node of the electro-optic transducer driver. In addition, a second differential input terminal of the electro-optic transducer is coupled to a second output node of the electro-optic transducer driver. Such connections provide for a first DC path from the first differential input terminal of the electro-optic transducer to the second electro-optic transducer driver output node and a second DC path from the first node of the termination resistor to first electro-optic transducer driver output node.

Description

technical field [0001] The present invention generally relates to optical transmitters. More particularly, the present invention relates to an interconnection arrangement for connecting a laser driver to a laser with high signal fidelity, low voltage and power loss. technical background [0002] Computer and network technology has changed our world. As the amount of network information communication increases, high-speed transmission becomes more important. Many high-speed data transmission networks rely on optical transceivers and similar devices that readily send and receive digital data represented by optical signals over optical fibers. Therefore, optical networking is considered to be a wide range of high-speed applications, ranging from local area networks (LANs) to the backbone of the Internet. [0003] Data transmission in such networks is typically achieved by means of optical transmitters (also known as electro-optical transducers) such as lasers or light emitti...

Claims

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Application Information

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IPC IPC(8): G02B6/12
Inventor 达里恩·詹姆斯·杜马
Owner FINISAR
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