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Brief Introduction to VCSELs (Vertical Cavity Surface Emitting Lasers)

Introduction of VCSELs

A VCSEL, or Vertical Cavity Surface Emitting Laser, is a semiconductor microlaser diode that emits light in a cylindrical beam vertically from the surface of a fabricated wafer, and offers significant advantages when compared to the edge-emitting lasers currently used in the majority of fiber optic communication devices.

VCSELs can be fabricated efficiently on a 3-inch diameter wafer. More importantly the ability to manufacture these lasers using standard microelectronic fabrication method allows integration of VCSELs on-board with other components without requiring pre-packaging. As an enabling technology, VCSELs allow superior new systems and products to be created at a lower cost.

Lasermate Group, Inc. provides VCSELs and GaAs, InGaAs and Silicon PIN photodiodes for applications in fiber-optic communications and general industry. Generally, we proudly deliver products of VCSEL chips, diodes, transmitter/receiver assemblies, and transceiver modules, in large volumes or small quantities for engineering purposes. We provide cost-effective products to customers for promoting the price and quality competition of their products.

Advantages of VCSELs

VCSELs have high performance and low cost advantages.

The key features of VCSELs are as follows:

  1. The structure can be integrated in two-dimensional array configuration.
  2. Low threshold currents enable high-density arrays. 
  3. Surface-normal emission and nearly identify to the photo detector geometry give easy alignment and packaging.
  4. Circular and low divergence output beams eliminate the need for corrective optics.
  5. Passive versus active fiber alignment, combined with high fiber-coupling efficiency.
  6. Low-cost potential given that the devices are completed and tested at the wafer level.
  7. Lower temperature sensitivity compared to the edge-emitting laser diodes.
  8. High transmission speed with low power consumption.
Applications of VCSELs

Our VCSELs are the promising emitter for fiber data communication in the speed ranges of 100Mbs and 10Gbs. The VCSELs enable high performance systems in Gigabit Ethernet, Fiber Channel, and ATM markets. Through the integration with original equipment manufacturer's (OEM) systems design, our 850 nm VCSELs provide enhanced performance benefits to a variety of applications, such as local area networks (LAN), telecommunication switches, optical storage and other optoelectronic systems.

Lasermate Group, Inc. maintains close coordination with OEMs to assist in the design with VCSEL components and sub-assemblies to develop new products and to meet customer's needs and expectations. 

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Information contained herein is considered typical data. Lasermate Group, Inc. reserves the right to change or modify specifications of products at any time without notice.

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