Abstract: The invention relates to a compact transmitter optical sub-assembly (OSA), which can be used in small form factor optical transceivers. To limit back reflections from entering the laser cavity, the laser is disposed on a silicon optical bench (SiOB) at an acute angle to the longitudinal axis of the OSA. A portion of the light from the laser cavity passes through the back end of the laser cavity for measuring by a monitor photodiode. A rear beam steering lens redirects the portion of light into a v-groove in the SiOB and off of a reflective surface formed in the end thereof to the monitor photodiode, which is positioned face down over the v-groove.

Abstract: A header assembly for use in an optical transmitter. The header assembly includes a header, a laser mounted on the header, and at least one passive electronic component mounted on the header, wherein the passive electronic component is one from the group of: an inductor, a capacitor, and a resistor.

Abstract: An optical transmitter that includes a laser that operates in the range of 1260-1360 nm, wherein the laser is in a transmitter package case that covers less than 0.30 square inches of surface area on a board to which the package case is mounted, wherein the optical transmitter continues to function in compliance with the transmission requirements of international telecommunciations union (ITU) standard 693 without thermoelectric cooling when an external temperature of the transmitter package case is at or within 1° C. of a temperature of the laser.