CALIENT Technologies

Move the light, not the fiber

Leadership Team

Arjun Gupta Headshot





Arjun Gupta, Executive Chairman

Telesoft Partners

Arjun Gupta is a contrarian investor with extraordinary persistence and belief. He is the founder of TeleSoft Partners, a special situations venture capital firm focused on high-tech and energy value chain companies. He has over 20 years of experience working with technology companies in venture capital, consulting and design engineering roles. At TeleSoft, Arjun manages capital commitments of $625+ million and has established Corporate Partnerships with Alltel, Bechtel, Deutsche Telekom, Nexant,, and Symphony. In 2001, Arjun also started a foundation to support community projects in education, medical research and the arts. The foundation has helped provide partial funding for about 90 projects to date. He is a member of the Stanford Business School Management Board, Trustee of The Aspen Institute, Trustee of the Rocky Mountain Institute, Officer of the Young President’s Organization (YPO) Colorado Chapter, Trustee of Natural Resources Defense Council, and Member of the Board of Governors and President of the Western Regional Association of the National Association of the Small Business Investor Alliance (SBIA).






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.



David Altstaetter Headshot





David Altstaetter, Vice President, Products and Solutions
Verizon, Sycamore, ADVA

David Altstaetter has spent more than twenty years of in the telecom industry.He has over 15 years of management and over 10 years executive management experience in product, engineering, and marketing. He has held positions at both network equipment providers and service providers including ADVA, Sycamore Networks and Verizon. Over his career, he has been responsible for creating and managing products and solutions for intra-data center and inter-data center physical layer switching fabrics.  David has been active in developing and promoting solutions and standards for converged physical and packet layer networks. David has authored and co-authored dozens of technical papers, holds two patents, and has given numerous national and international presentations in the area of optical switching. He holds a Bachelor’s in Electrical Engineering from Texas Tech University.







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.