About Indium Phosphide (InP) Technology
The world's communications infrastructure depends on semiconductor lasers, and particularly those based on indium phosphide technology. Indium phosphide lasers are engineered to emit at wavelengths that are optimal for long-distance transmission through fiber optics. In short, they enable the optical networks that form the global internet.

Coherent's broad portfolio of InP components includes application-specific Fabry-Pérot lasers, directly modulated lasers (DMLs), and tunable lasers. It also includes photodiodes for high-speed receivers and power monitoring. In 2022, we introduced 200 Gbps indium phosphide electro-absorption modulated lasers (EMLs) for high-speed datacenter transceivers. This design provides our customers with the most advanced, robust, and cost-competitive laser devices for their 800G and next-gen 1.6T datacom transceiver designs.

Our world-class and highly reliable InP technology platform is one of the very few in the industry that has been proven, with more than one hundred million lasers in the field deployed over the last decades.

The Principal Design Engineer will be responsible for designing and developing high-speed, high-sensitivity InGaAs/InP photodiodes to support next-generation high-speed optical transceivers. This role focuses on advancing photodiode performance to meet the growing demands of high-speed optical communication systems.

We are seeking an experienced photodiode design engineer with expertise in high-speed, high-sensitivity device development and a passion for innovation in next-generation optoelectronic products. If you are excited about advancing cutting-edge photonic technologies, we invite you to join our team in Fremont, California.

Primary Duties & Responsibilities

• Lead the design and product development of high-speed and high-sensitive InGaAs /InP photodiodes
• Work with epitaxial and process engineers to define the device structure and process.
• Coordinate with test and reliability engineers to arrange performance and reliability testing.
• Working closely with internal fab facility and external vendors to advance cutting edge manufacturing technologies.

Education & Experience

• PhD with 10+ years of relevant experience
• Optoelectronic device design and simulation
• Photodiode epi materials growth, development and quality control
• Photodiode wafer front process and backend process.
• Photodiode test and characterization.
• Photodiode reliability qualification.

Skills

• Lead the architectural designs of high-speed and high-sensitive InGaAs / InP photodiodes
• Design high-speed and high-sensitive photodiode epi structures
• Design both front- and back-end wafer process flows
• Support and Perform device characterization
• Support product qualification and release

Working Conditions

• This role will be based on-site in Fremont, CA.
• Regular use of a computer and other office equipment is necessary.

Physical Requirements

• Ability to sit and work at a computer for extended periods
• Occasional standing or walking within engineering labs or manufacturing areas.
• Ability to communicate effectively in meetings, presentations, and written documentation.
• Ability to travel internationally as required.

Safety Requirements

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Quality and Environmental Responsibilities

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Culture Commitment

Ensure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:

Integrity - Create an Environment of Trust

Collaboration - Innovate Through the Sharing of Ideas

Accountability - Own the Process and the Outcome

Respect - Recognize the Value in Everyone

Enthusiasm - Find a Sense of Purpose in Work

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

If you need assistance or an accommodation due to a disability, you may contact us at talentacquisition@coherent.com .Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!

Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.Job Summary: