Abstract: One example embodiment includes an optical subassembly (OSA). The OSA includes a leadframe circuit, an optical port, and an active optical component subassembly. The active optical component subassembly is mounted to the leadframe circuit. The optical port is mechanically coupled to the leadframe circuit.

Abstract: One example embodiment includes an optical subassembly (OSA). The OSA includes a leadframe circuit, an optical port, and an active optical component subassembly. The active optical component subassembly is mounted to the leadframe circuit. The optical port is mechanically coupled to the leadframe circuit.

Abstract: This disclosure concerns systems, methods and devices for temperature-based control of laser performance. One example of a method is performed in connection with a laser of an optoelectronic transceiver. In particular, the laser is operated over a range of temperatures and the optical output of the laser is monitored. During operation of the laser, the bias current and current swing supplied to the laser are adjusted to the extent necessary to maintain a substantially constant optical output from the laser over the range of temperatures.

Abstract: This disclosure concerns methods for calibrating optical emitters. For example, one calibration method is employed in connection with an optical transceiver that includes a laser. A range of temperatures is defined that includes low end and high end temperatures. At a first temperature, within the range, a first bias current to the laser is adjusted until the laser generates an optical signal at a first predefined power level. At a second temperature outside the range, a second bias current to the laser is adjusted until the laser generates an optical signal at a second predefined power level. If the second temperature is greater than the high end temperature, the second predefined power level is defined as less than the first predefined power level, and if the second temperature is less than the low end temperature, the second predefined power level is defined as greater than the first predefined power level.

Abstract: A method of maintaining desirable optical performance of an optoelectronic apparatus at extreme temperatures is disclosed. At a first temperature, a first bias current at which the laser generates optical signals at a first level is determined. At a second temperature outside of a predefined range of the first temperature, a second bias current at which the laser generates optical signals at a second level is determined. If the second temperature is greater than the higher end-point temperature of the predefined range, the second predefined level is defined to be less than the first predefined level. If the second temperature is less than the lower end-point temperature of the predefined range, the second predefined range is defined to be greater than the first predefined level.

Abstract: This disclosure concerns methods for calibrating optical emitters. For example, one calibration method is employed in connection with an optical transceiver that includes a laser. A range of temperatures is defined that includes low end and high end temperatures. At a first temperature, within the range, a first bias current to the laser is adjusted until the laser generates an optical signal at a first predefined power level. At a second temperature outside the range, a second bias current to the laser is adjusted until the laser generates an optical signal at a second predefined power level. If the second temperature is greater than the high end temperature, the second predefined power level is defined as less than the first predefined power level, and if the second temperature is less than the low end temperature, the second predefined power level is defined as greater than the first predefined power level.

Abstract: This disclosure concerns systems, methods and devices for temperature-based control of laser performance. One example of a method is performed in connection with a laser of an optoelectronic transceiver. In particular, the laser is operated over a range of temperatures and the optical output of the laser is monitored. During operation of the laser, the bias current and current swing supplied to the laser are adjusted to the extent necessary to maintain a substantially constant optical output from the laser over the range of temperatures.

Abstract: A method of maintaining desirable optical performance of optical emitters over temperature variations is disclosed. The optical performance of an optical emitter in terms of power, extinction ratio, jitter, mask margin and general fiber optic transmitter eye quality can be maintained by the present invention over a wide range of temperatures. Advantageously, the present invention enables the use of inexpensive optical emitters in optoelectronic transceivers and optoelectronic transmitters.

Abstract: A method of maintaining desirable optical performance of optical emitters over temperature variations is disclosed. The optical performance of an optical emitter in terms of power, extinction ratio, jitter, mask margin and general fiber optic transmitter eye quality can be maintained by the present invention over a wide range of temperatures. Advantageously, the present invention enables the use of inexpensive optical emitters in optoelectronic transceivers and optoelectronic transmitters.

Abstract: A method of maintaining desirable optical performance of an optoelectronic apparatus at extreme temperatures is disclosed. At a first temperature, a first bias current at which the laser generates optical signals at a first level is determined. At a second temperature outside of a predefined range of the first temperature, a second bias current at which the laser generates optical signals at a second level is determined. If the second temperature is greater than the higher end-point temperature of the predefined range, the second predefined level is defined to be less than the first predefined level. If the second temperature is less than the lower end-point temperature of the predefined range, the second predefined range is defined to be greater than the first predefined level.

Abstract: A light transmission system includes a laser, an optical fiber and a transfer lens. The fiber optic transfer for transfers light emitted by the laser into the optical fiber. The transfer lens includes a hyperbolic collimating surface for receiving and collimating light originating from the laser. The transfer lens also includes an output lens surface shaped so that light reflected from the end of the optical filter is not focused at a location at which the light is emitted by the laser. Additionally, in various preferred embodiments light launched into the optical fiber avoids index anomalies on the axis of the optical fiber and at the core-cladding interface.