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US 2015/0092803 A1Published application
Laser diode and transmitter module
AssigneeSumitomo Electric Device Innovations, Inc.
InventorsYasuo YAMASAKI, Nobumasa OKADA
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Abstract
A transmitter module that includes a laser diode (LD) and a driver, each mounted on a sub-mount, is disclosed. The driver directly drives the LD by supplying a modulation signal, a bias signal, and a reference. Two signals are provided to a first pad of the LD, while, the reference is provided to the second pad of the LD. The second pad in the center thereof is formed relatively closer to the second facet of the LD opposite to the first facet through which the laser light is emitted.
Claims6
A transmitter module comprising:
- a laser diode (LD) having a first facet to emit light and a second facet opposite to the first facet, the LD having a first pad and a second pad;
- and
- a driver set as facing the second facet of the LD, the driver directly driving the LD by supplying a bias signal and a modulation signal to the first pad of the LD;
- a first bonding wire connecting the first pad to the driver to provide the modulation signal;
- a second bonding wire connecting the second pad of the LD to the driver;
- and
- a third bonding wire connecting the first pad of the LD to the driver to provide the bias signal,
- wherein the second pad of the LD is positioned closer to the second facet relative to the first facet.
5 more elements
Dependencies are inferred from the claim text.