CALIENT Technologies

Move the light, not the fiber

Leadership Team









Arjun Gupta, Executive Chairman
Telesoft Partners

Arjun Gupta is the Executive Chairman at Calient and has been the key investor in Calient for two decades. In addition Arjun is the Chief Believer and founder of Telesoft Partners (, a special situations venture capital firm in Silicon Valley. Over the last twenty five years, he has invested in and helped build over 85 technology companies, of which over 50 companies have been acquired or gone public (combined market cap over $750 billion). Recognizable brands include DocuSign,, T-Mobile USA, Uber and others. He was on the Forbes Midas List of Top-100 Venture Investors in 2006, 2007, 2008, 2009. Prior to Telesoft, Arjun was at McKinsey & Company where his clients included Apple, AT&T/PacBell, Verizon/PacTel and others. He was part of the Digital Transition Project for LA which launched Qualcomm CMDA against the industry standard of TDMA. He was also part of the Paradigm Project which led to the spinoff of General Magic from Apple. He started his career at Tektronix Inc, initially as an operating systems software engineer, then a field applications engineer and finally a product specialist covering new product introductions in the US, Germany and Japan. Arjun loves developing and scaling great technology products.

In 2001, Arjun launched a family foundation to support education, conservation and the performing arts. The foundation has supported over 100 projects in America, India and Africa. Arjun is a Trustee of Aspen Institute and the Aspen Music Festival. He is a co-founder and co-chair of YPO Gold Aspen. Arjun is an avid outdoorsman and has skied to the North Pole and to the South Pole, and was recently appointed a UN Mountain Partnership Ambassador to help with climate change initiatives. Since 2013, Arjun has been a member of the new ownership group of the Sacramento Kings NBA basketball team.

Arjun received his MBA from Stanford University, an MS and BS (Phi Beta Kappa) in computer science from WSU, and a BA (Honors) in economics from St Stephen’s College (India). He is an ALI Fellow at Harvard University and a Henry Crown Fellow at the Aspen Institute. Arjun lives in San Francisco and Aspen.






Kevin Welsh, Ph.D., CEO (Acting)

IBM, Seagate, Applied Magnetics

Kevin Welsh’s biography is pending.







Carvin Chen, President
Suzhou Chunxing Precision Mechanical Co., Ltd., Andrew Telecommunications

Carvin Chen was the Deputy GM/Executive VP at Suzhou Chunxing Precision Mechanical Co., Ltd., a leading company principally engaged in the manufacturing of precision aluminum and magnesium alloy structures as well as 3D glass, plastic structures for telecommunication, consumer electronics/IT, automobile and industrial market segments. Its products mainly include precision die casting products, machining products, 3D glass products, stamping sheet metal parts and plastic injection parts. Chunxing is also engaged in the business of designing, manufacturing and distributing RF conditioning products for wireless telecommunication infrastructure. He was responsible for the overall operations of the company with multiple sites and 8000+ employees globally. Carvin previously served as the Director of Operations at Andrew Telecommunications.


Rick Santos, VP and CFO
Validity, Intel, Deloitte

Rick Santos brings over twenty years of financial management experience with public and private technology companies to Calient. Prior to joining Calient, Rick held senior controller positions at Intel, the last of which was Group Controller for Intel’s Digital Home and Consumer Electronics businesses. With direct involvement in over $1 billion in private equity placements and M&A transactions, Rick is uniquely qualified to guide Calient’s financial growth. Rick has held senior financial positions with a wide variety of technology companies and public accounting firms, including: Validity, Intel, Exar, Fundamental Software, VxTel, and Deloitte & Touche. As CFO of VxTel, Rick was instrumental in raising over $80 million in private equity funding and played a pivotal role in the acquisition of VxTel by Intel Corporation.








Chris SB Lee, Ph.D., CTO, MEMS
Intel, Cornell, MIT

Chris SB Lee is responsible for productizing and developing Calient’s MEMS switching solutions.  Dr. Lee joined Calient in 1999 after completing his doctoral research on the design and testing of Low-voltage, Single Crystal Silicon MicroElectroMechanical Systems.  He leads the development of Calient’s core MEMS technology as well as the volume production of MEMS modules. Chris received his bachelors in Materials Science and Engineering from Massachusetts Institute of Technology and his doctorate in Electrical Engineering from Cornell University. Chris’s extensive MEMS research was conducted at Cornell NanoScale Science & Technology Facility. His prior work experiences include working at Intel Corporation as a process and integration engineer.








Shifu Yuan, Ph.D., CTO, Optics
Corning, Tsinghua University, UCF

Shifu Yuan has 30 years of R&D experiences in optics and photonics and over 15 years of technical and executive management experiences. He worked in Tsinghua University as a post-doctoral researcher and an Associate Professor and also held a senior research scientist position in CREOL/School of Optics, University of Central Florida. His industry experiences include Electro-Optic Engineer at Chorum Technologies Inc., Sr. Research Scientist at Corning Inc., and CTO Optics at Calient. He has made significant contributions to the field of optical communications through pioneering the development and commercialization of wavelength selective switch and large scale MEMS optical switching. Shifu has over 60 publications and holds more than 12 patents and co-authored a book chapter. He has a bachelors in Applied Physics, as well as a masters and doctorate in in Optics, all from the Harbin Institute of Technology in China.







Rohit Kunjappa, Vice President, Systems Engineering

Verizon, Sycamore, Coriant

Rohit Kunjappa is a twenty-year veteran in the telecommunications field. He has gained extensive industry knowledge by working for both Service Providers (Verizon, Fujitsu Network Services) and Telecom Equipment Manufacturers (Sycamore Networks, Coriant). His in‑depth understanding of complex network topologies allows him to accurately assess customer needs and provide creative, pragmatic, and cost-effective solutions. As VP of Systems Engineering at Calient, he leads a team of highly skilled sales/systems/solutions engineers to help Data Centers, Service/Content Providers, MTDCs, Labs, and others maximize their use of deployed resources and achieve substantial CapEx and OpEx savings. He has authored technical and non-technical articles and regularly presents and participates in optical switching forums. Rohit has a Master’s in Chemical Engineering from Oklahoma State University and an MBA in Global Leadership from The University of Texas, Dallas.