Chun He

Founded a U.S. research laboratory focused on advanced micro-optics–based photonic products for data center and telecom applications, including OCS, record-setting reflective-type array circulators, and extremely high-bandwidth integrated WSDM (wavelength- and space-division multiplexing) solutions. Conceived and developed 1.5 µm eye-safe fiber lasers with novel fiber-optic component architectures, achieving record-breaking results. Developed state-of-the-art ultra-high-gain optical amplifiers, including 49 dB YDFAs and 47 dB EDFAs. Designed and realized very-high-power, frequency-doubled solid-state laser systems (Nd:YLF and Tm:YAG) for advanced semiconductor processing and medical surgery.

Initiated ultrashort-pulse fiber laser programs and delivered prototype products within one year, achieving performance exceeding industry records across multiple metrics. Designed and built high-performance fiber amplifiers using a wide range of fibers (SMF, DCF, LMAF, MMF), pumping configurations, and advanced ASE-suppression architectures. Designed and developed innovative fiber-optic components that directly enabled the record-level performance of laser and amplifier systems. Led and managed cross-disciplinary engineering teams spanning lasers, electronics, mechanics, fiber optics, and optical design to deliver highly integrated, high-performance, and cost-effective ultrafast laser systems. Initiated and led the development of direct-pulsed semiconductor lasers (DPSLs) with reconfigurable pulse width and repetition rate, enabling flexible, low-cost alternatives to conventional Q-switched and mode-locked lasers.

Initiated and developed a novel hermetic-sealing methodology, successfully implemented in production and reducing Gemfire product costs by more than 50%. Proposed a chip-to-chip hybrid integration architecture and designed a hybrid-integrated Vmux, achieving a 66% manufacturing cost reduction for a 48-channel Vmux. Developed lifetime reliability models and led the team through Telcordia and lifetime qualification testing. Proposed and demonstrated an innovative one-step, four-part simultaneous alignment process for chip-to-chip Vmux assembly, establishing a foundation for scalable multi-chip and multi-component hybrid integration in the photonics and fiber-optic communications industries.

Designed and developed a new generation of micro-optic components for fiber-optic products in the telecommunications industry. Invented a 3-dimensional “xyz-shift-only” alignment technique, replacing the conventional 5-dimensional alignment method (xyz translation plus pitch and yaw). This innovation delivered breakthrough improvements in performance, reliability, and product lifetime for fiber-optic components. Established three company-wide product platforms based on the xyz-shift-only alignment technology, encompassing virtually all micro-optics products used in modern fiber-optic communication systems.

Performed end-to-end III–V semiconductor device fabrication, including mask design, wafer processing, and device packaging. Developed and manufactured 1550 nm VECSEL laser sources for long-haul telecom systems.

Performed quantitative characterization of 3D solid-state surfaces using laser-based mass spectrometric techniques. Applied laser multiphoton ionization and single-photon ionization TOF mass spectrometry for surface chemistry and organic molecular analysis. Designed and constructed a time-of-flight mass spectrometer from the ground up. Designed and built a 118 nm deep-ultraviolet laser system, enabling single-photon ionization measurements.