Frequently quoted advantages of VCSELs over other optical sources include wafer scale fabrication and testing, low
cost, ease of fabricating arrays and ease of fiber coupling. To benefit from these advantages a robust manufacturing
process and product demand are needed. Avago Technologies produces a range of single channel and parallel optical
link products incorporating 850nm band VCSEL sources operating at up to 10Gb/s per channel. This paper will explore
some important factors which need to be controlled for manufacturability of VCSEL devices.
Directly modulated 850nm oxide VCSEL is a key enabling technology for short reach, high speed
data-communication applications. Current commercially available optical transceiver products operate at data rate
up to 10Gb/s per channel, for aggregate data rate of 70Gb/s and beyond, in the case of parallel optical data link.
High volume, low cost, over temperature optical modulation speed, spectral width, output power, thermal power
budget, large signal electrical interaction with the IC driver, and reliability are some of the key requirements
driving the 850nm oxide VCSEL development. In this paper, we discuss some of the engineering issues
investigated for developing a viable oxide VCSEL product operating at 10Gb/s per channel and higher data rate.