Principal Engineer, Laser Controls
$200,000–$260,000 year
On-site · San Jose, California, United States
Job Summary
Define and own the end-to-end laser module control architecture, including APC (Automatic Power Control) loops, ACC (Automatic Current Control) strategies, automatic calibration frameworks (power, current, aging compensation, temperature drift), and TEC (Thermoelectric Cooler) control for wavelength and thermal stability. Lead the design, modeling, and optimization of laser control loops accounting for non-linearities, aging, degradation, and environmental variations. Architect closed-loop control strategies balancing performance, reliability, and manufacturability across PVT and lifetime conditions. Develop and own module embedded laser control firmware (real-time control loops, calibration routines, fault detection/protection/recovery). Establish modeling and correlation frameworks linking simulation to silicon and optical performance. Required qualifications include MS in related field, 12+ years in laser systems and control, APC/ACC loop design, laser behavior, feedback control theory, calibration algorithms (factory/in-field), embedded firmware for real-time control, and modeling/simulation skills. Preferred qualifications include PhD, experience with pluggable optical modules and CMIS, SerDes, reliability engineering, and high-volume manufacturing exposure.
Required Qualifications
- MS in Electrical Engineering, Photonics, Controls, or related field
- 12+ years of experience with deep focus on laser systems and control
- APC/ACC loop design and optimization
- Laser behavior (L-I-V characteristics, thermal effects, degradation mechanisms)
- Feedback control theory and real-world implementation
- Proven experience implementing calibration algorithms (factory and adaptive/in-field)
- Strong embedded firmware background for real-time control systems
- Proficiency in modeling and simulation (MATLAB/Python/Simulink or equivalent), with demonstrated correlation to hardware
- Track record of driving system-level architecture and influencing cross-functional teams
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