Casela Technologies Introduces High-Power, High-Efficiency DFB Lasers for Silicon Photonics-based Transceivers at OFC 2023 | News Direct

Casela Technologies Introduces High-Power, High-Efficiency DFB Lasers for Silicon Photonics-based Transceivers at OFC 2023

Casela Technologies
News release by Casela Technologies

facebook icon linkedin icon twitter icon pinterest icon email icon Palo Alto, CA | March 02, 2023 09:06 AM Eastern Standard Time

 Casela Technologies, a global, vertically integrated semiconductor laser company delivering high-performance laser technology, products and platforms for data communications infrastructure worldwide, today announced the introduction of its 1310nm band high-power, continuous-wave (CW) distributed feedback (DFB) lasers with record high power conversion efficiency and optical powers for silicon photonics-based transceivers.

The new laser, along with Casela’s other innovative products, will be on display in booth #1929 at next week’s OFC (Optical Fiber Communication Conference) in San Diego, Calif., from March 5 - 9, 2023.

Digital transformation, 5G, passive optical network (PON) and cable fiber initiatives continue to drive bandwidth growth for optical communications. East west traffic inside data centers continues to increase bandwidth demand year over year between 40 and 50%. 400G is the current state of the art, but there is already a roadmap for 800G and then 1.6T. Silicon photonic-based transceivers are the leading solution for transceivers used inside data centers and for client optics in service provider networks. These optical transceivers and new co-packaged systems-on-chip (SoC) architectures require very efficient, high-power, low-noise lasers at various wavelengths. With increased baud rate and lane count (4X or 8X) and bandwidth growth from 400G to 1.6T, optical power requirements have increased.

Casela’s new 1 and 2 mm long DFB lasers achieve 125mW to 200mW optical power when uncooled and 300 to 400mW, respectively, when cooled, enabling the use of single laser for DR4 and DR8 transceivers. High optical powers are achieved at industry-leading power conversion efficiencies of 30% when cooled and 20% when uncooled operating at the maximum rated power. Key features include large modes with near-circular profiles that improve coupling efficiency to fibers or silicon-based waveguides and reliable operation proven during accelerated life testing. The same high-efficiency, high-power laser design is also available at other WDM, LAN-WDM and CWDM4 wavelengths.

The technical details for the lasers will be presented at OFC:

“Record high-efficiency high-power uncooled 1.31 um CW-DFB lasers”

Monday, March 6, 2023 - 4:30 pm - 4:45 pm PST, Session: M4C.1, Room 3

By: Milind Gokhale, Casela Co-founder and Chief Technology Officer

“Casela was founded by industry veterans to focus on an innovative path to higher laser powers and efficiency demanded by new requirements in datacenters and system-on-chip (SOC) applications,” said Dr. Bo Lu, CEO of Casela Technologies. “With the demonstration and publication of our industry-leading laser results at OFC 2023, we are announcing our new laser platform and products for transceiver and co-packaged optics applications. We are also pleased that Casela’s high-output laser performance has been validated by multiple customers and will be available in high-volume production in 2H2023.”


About Casela Technologies

Casela is developing a broad range of lasers, including CW lasers, electroabsorption-modulated lasers (EMLs), and external lasers modules using a proven and reliable buried heterostructure laser platform. For more information, visit 


Contact Details


Wilkinson + Associates for Casela


Leah Wilkinson


+1 703-907-0010

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lasersOFC2023semiconductorhigh powerDFB lasersdata communicationssilicon photonics