Top contact vcsel with monitor

Details Top contact vcsel with monitor Top contact vcsel with monitor

H - Electricity

01

S

H01S 5/022 (2006.01) H01S 5/02 (2006.01) H01S 5/042 (2006.01) H01S 5/0683 (2006.01) H01S 5/183 (2006.01)

Patent

CA 2287134

A vertical cavity surface emitting laser (VCSEL) and monitoring diode combination having reduced parasitic capacitance for use in high bandwidth communications systems. The VCSEL has both p-type and n-type contacts on the same face. This allows the VCSEL to be mounted on a monitor chip or diode without using a metal contact layer. In an embodiment wherein the VCSEL is soldered to the monitor chip for mechanical stability only a small metal pad no larger than the VCSEL is used. The reduction in metallisation results in a lower parasitic capacitance that io turn results in higher potential operational speeds,

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