Optical networking unit (ONU) packaging

摘要

A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.

主权项

1. A bidirectional optical subassembly (BOSA) optical networking unit (ONU) comprising:
a BOSA housing configured to be coupled to a single optical fiber for transmitting and receiving optical signals, said BOSA housing comprising a single metal housing and a removable cover over a portion of said single metal housing to provide access to an interior of the BOSA ONU, wherein said BOSA housing comprises an alloy of stainless steel or an alloy of Kovar to provide thermal conductivity for components in said ONU; a tunable laser located in said BOSA housing without a separate TOSA housing, said tunable laser configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control; a thermal management device located in said BOSA housing, said thermal management device configured to provide said temperature control; a photo diode located in said BOSA housing, said photo diode configured to receive a second optical signal at a second selected wavelength; and a diplexer optically coupled to said tunable laser and to said photo diode, said diplexer being configured to optically couple said first optical signal from said tunable laser to said single optical fiber and to optically couple said second optical signal from said single optical fiber to said photo diode.