SMALL PACKAGED TUNABLE LASER TRANSMITTER

摘要

A tunable laser transmitter configured in a small package subassembly coupled to a printed circuit board. The tunable laser transmitter includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. A first and a second optical output interface is positioned at the second end of the housing, the first output being configured to transmit a modulated optical beam, and the second output configured to transmit a cw beam to the local oscillator of an external receiver.

主权项

1. A small, packaged tunable optical transmitter comprising:
a first housing; an electrical input interface positioned at the first end of a first housing, the electrical input interface configured to receive an information-containing electrical signal; an optical first output interface positioned at the second end of the first housing, the optical output interface configured to transmit a modulated optical communication beam; a tunable semiconductor laser disposed within a rectangular second housing having a volume of less than 0.6 cubic centimeters, the second housing being disposed in the interior space of the first housing, the second housing having six planar exterior walls including a bottom, a top, opposing first and second ends, and opposing sidewalls, the exterior walls forming a hermetically sealed interior space and operable to emit a laser beam having a selectable wavelength; and a semiconductor-based modulator positioned in the interior space of the first housing along an optical path of the laser beam, the semiconductor-based modulator configured to impart I and Q modulation respectively to the laser beam corresponding to the information-containing electrical signal received through the electrical input interface.