초록 ▼

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 with

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 metallization results in a lower parasitic capacitance that in turn results in higher potential operational speeds

대표청구항 ▼

1. A method of assembling a top emitting vertical cavity surface emitting laser (VCSEL) and a photo detecting optical output monitoring chip pair, comprisingproviding a monitoring chip having electrical contacts and a photo detecting surface; attaching said VCSEL to said photo detecting surface so t

1. A method of assembling a top emitting vertical cavity surface emitting laser (VCSEL) and a photo detecting optical output monitoring chip pair, comprisingproviding a monitoring chip having electrical contacts and a photo detecting surface; attaching said VCSEL to said photo detecting surface so that at least a portion of said photo detecting surface is uncovered, said VCSEL having a back face which is attached to said photo detecting surface with an electrically isolating adhesive and electrical contacts on a top face; and providing electrical connections to said monitoring chip and to said contacts on said VCSEL.