Lot's of word salad. Have you seen anything that relates to Rockley's footprint or power consumption, insertion loss, transmission loss, RF limits. Try and find it. It's pretty much out in the open for POET. You are aware of the importance of losses I assume.
Here are some metrics you might want to review:
| |
IMEC [11,12]
|
HP [13,14]
|
Luxtera/TSMC [5]
|
ST Microelectronics [6,15]
|
|
Technology
|
|
|
|
|
|
Availability
|
Prototyping/Research
|
Prototyping/Research
|
High-volume ∗
|
High-volume
|
|
Integration Method
|
Wire-bond
|
Wire-bond
|
3D Cu-pillar
|
3D Cu-pillar
|
|
Photonics process node
|
220 nm SOI
|
130 nm SOI CMOS
|
130 nm SOI CMOS
|
PIC25G SOI
|
|
Circuits process node
|
28 nm/40 nm CMOS
|
65 nm CMOS
|
28 nm CMOS
|
55 nm BiCMOS/65 nm CMOS
|
|
NFET fT
|
275 GHz/305 GHz
|
N/R
|
N/R
|
300 GHz/200 GHz
|
|
Wavelength
|
1550 nm
|
1550 nm
|
1310 nm
|
1310 nm
|
|
Photonics Performances
|
|
|
|
|
|
Waveguide Loss
|
1 dB/cm
|
3 dB/cm
|
1.9 dB/cm
|
3 dB/cm
|
|
Couplers Loss
|
2 dB
|
5 dB
|
2.2 dB
|
2.15 dB
|
|
Modulator Device
|
Ring-resonator
|
Ring-resonator
|
MZM
|
MZM
|
|
Modulator Bandwidth
|
38 GHz
|
N/R
|
25 Gb/s
|
25 Gb/s
|
|
PD Responsivity
|
0.8 A/W
|
0.45 A/W
|
1 A/W
|
0.88 A/W
|
|
PD Bandwidth
|
50 GHz
|
30 GHz
|
24 GHz
|
20 GHz
|
|
System Performances
|
|
|
|
|
|
Transmitter Data-rate
|
50 Gb/s
|
25 Gb/s
|
25 Gb/s
|
56 Gb/s
|
|
Extinction Ratio (Insertion Loss)
|
5 dB (5 dB)
|
7 dB (5 dB)
|
4.2 dB (1.5 dB)
|
2.5 dB (7.5 dB)
|
|
Transmitter Energy †
|
0.61 pJ/b
|
2.5 pJ/b
|
N/R
|
5.35 pJ/b
|
|
Receiver Data-rate
|
20 Gb/s
|
25 Gb/s
|
25 Gb/s
|
25 Gb/s
|
|
Receiver Sensitivity
|
70 µA
|
72 µA
|
N/R
|
97 µApp
|
|
Receiver Energy
|
0.58 pJ/b
|
0.68 pJ/b
|
N/R
|
1.24 pJ/b
|
|
N/R = Not Reported * High-volume assumes a 300mm foundry † Modulator and driver energy efficiency
|
|
|
