Optical transmitter with linear arrangement and stacked laser package and RF path

摘要

Described herein is an optical transmitter that includes an RF signal path that is, at least partially, parallel with an optical signal path. In one embodiment, an electrical transmission element, which defines the RF signal path, is disposed between a laser emitting the optical signal and a side wall of a package containing the optical transmitter. Although the RF and optical signals may propagate along different planes within the optical transmitter, both signals are received at an optical modulator. Using the RF signal, the optical modulator modulates the optical signal (e.g., a continuous wave) to generate a modulated optical signal. The optical modulator then outputs the modulated signal to a receptacle coupled to a light carrying medium such as a fiber optic cable.

主权项

1. An optical system, comprising:
a laser assembly in a hermetic enclosure; an optical modulator external to the hermetic enclosure, the optical modulator configured to receive an optical signal generated by the laser assembly and modulate the optical signal based on received data signals; a casing containing the hermetic enclosure and the optical modulator; an electrical transmission element disposed between the hermetic enclosure and a sidewall of the casing, the electrical transmission element extends, at least partially, along a first axis that is substantially parallel to both (i) a second axis on which the optical signal propagates between the laser assembly and the optical modulator and (ii) the sidewall, wherein the electrical transmission element is configured to provide the data signals to the optical modulator, wherein the electrical transmission element extends into a region between the hermetic enclosure and the optical modulator, and wherein the electrical transmission element curves in the region towards the optical modulator.