The acronyms SiPh and PIC represent Silicon Photonics and Photonic Integrated Circuit, respectfully.
Various websites on the internet defines Silicon Photonics as: Silicon photonics is the innovative study and application of photonic systems for generating, processing, manipulating and otherwise using light for faster data transmission both between and within microchips. Silicon is used as the optical medium. Operation is in infrared wavelengths (commonly 1.55 micrometers), which are used in fiber-optic telecommunication systems. Silicon photonics, with its ultra-fast data transfer between and within microchips, will significantly determine future progress in computer technology and the continuation of Moore’s law.
Another perspective of a Photonic Integrated Circuit can be simply defined as the following, where electrons and photons work together on a common medium or a platform where photonic circuitry works together with electronic circuitry on a common system platform.
The possibilities are endless with the integration of photons and electrons on a common medium. For example, a hybrid integration of photonic and electronic circuitry using silicon photonic components require ultra-fine flip chip interconnections for energy efficiency, single-mode optical interfaces (laser to waveguide, waveguide to waveguide or waveguide to fiber) require sub-micron alignment and placement accuracy and PCBs may require embedded optical waveguides and couplers to facilitate optical ICs.
A fundamental SiPh design requires an edge emitting laser diode to be eutectically bonded to silicon. Typically, the laser diode is bonded into a cavity, where the cavity is precisely etched into a silicon wafer. The challenge is the position and bonding of the laser diode so the emitted photons are aligned accurately enough to the waveguide opening such that the photon energy is not attenuated. Many creative solutions and processes have been developed to obtain an effective result that is efficient and production worthy without the use of active alignment techniques.
ASMPT AMICRA GmbH offers two die attach solutions to address the SiPh/PIC market segment. We primarily serve the high volume production segment of the SiPh/PIC market.
AFC Plus supports:
NOVA Plus supports:
Our ASMPT AMICRA Systems support the following bonding processes:
A capacity/bulk of materials like die or lenses and substrates can be manually loaded or automatically presented to the AMICRA system. The die or lens can be presented to the machine in waffle packs, gel packs or wafers (film frames or grip rings). The substrates can be presented to the machine one at a time or in custom trays, or the AMICRA system can load each substrate to the bonding stage automatically, provided the substrates are presented in wafer, waffle packs or gel packs.
Epoxy or UV adhesive can be applied to the die via die dipping or applied via pin transfer (epoxy stamping) or via through a variety of standard dispensing systems, located at the bond station or located upstream prior to the bond station:
Note: The AMICRA systems are essentially a vision driven die attach machine consisting of 4x automatic vision systems located throughout the machine, all imaging systems (camera, optics and illumination) are fixed to a very rigid structure made of granite. Imaging systems are located:
A single or dual pick and place bondhead(s) are mounted to a linear motor where either a die, lens or flip chip die are picked up, via a vacuum tool, from the Pick-up Station and either the: