System and methods for managing heat in a photonic integrated circuit
View Patent ↗In part, in one aspect, the disclosure relates to a system including a photonic integrated circuit (PIC) assembly, comprising a PIC comprising: a first bond pad disposed inward from an edge of the PIC a first distance; and a first wire having a first length, the first wire electrically connected to the first bond pad and extending therefrom, wherein the first distance is greater than 0.4 mm.
1. An optical transceiver comprising:
a housing comprising an interior surface and exterior surface;
a plurality of pins extending outward from the exterior surface of the housing;
an interior volume at least partially enclosed within and defined by the housing;
a plurality of connectors disposed along the interior surface of the housing, the plurality of connectors electrically connected to the plurality of pins; and
a photonic integrated circuit (PIC) assembly comprising a PIC, the PIC comprising a plurality of bond pads, the PIC assembly disposed in the interior volume,
wherein the bond pads are disposed inward from an edge of the PIC a first distance, wherein the first distance is greater than about 0.4 mm,
wherein each of the bond pads is uniquely electrically connected to an associated connector of the plurality of connectors along the interior surface of the housing with a bond wire at least partially rounded across a distance between each of the bond pads and each associated connector, wherein a length of the bond wire is greater than a distance between each of the bond pads and the associated connector, wherein the length of the bond wire ranges from about 0.4 mm to about 2 mm.
2. The optical transceiver of claim 1 , wherein the PIC assembly comprises a PIC comprising the plurality of bond pads, wherein the bond pads are disposed towards the center of the PIC.
3. The optical transceiver of claim 1 , wherein the PIC comprises a region affected by a level of heat proximate to the region, wherein the region is disposed distally from each of the bond pads.
4. The optical transceiver of claim 1 , wherein the length is selected to thermally isolate one or more components of the PIC such that during operation temperature variation of the PIC ranges from about 49 degrees to about 51 degrees.
5. The optical transceiver of claim 1 , wherein the length ranges from about 0.4 mm to about 2 mm.
6. The optical transceiver of claim 1 , wherein the length is greater than the distance between a first bond pad of the bond pads to a first connector of the connectors, wherein the first connector is associated with the first bond pad.
7. The optical transceiver of claim 1 , wherein the length of the bond wire is about three times the distance between the PIC assembly and the interior surface of the housing.
8. The optical transceiver of claim 1 , wherein the PIC further comprises a first region affected by a level of heat proximate to the first region, wherein the first region is disposed distally from each of the bond pads.
9. The optical transceiver of claim 1 , wherein the PIC assembly further comprises a thermo-electric cooler (TEC), wherein the PIC is coupled to the TEC; a thermistor disposed on the PIC configured to provide feedback to the TEC based on a temperature detected by the thermistor; and a laser diode optically connected to the PIC.