Thermally shielded multi-channel transmitter optical subassembly and optical transceiver module including same
US9236945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Aug 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/025
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A thermally shielded multi-channel transmitter optical subassembly (TOSA) may be used in a multi-channel optical transceiver. The multi-channel TOSA generally includes an array of lasers optically coupled to an arrayed waveguide grating (AWG) to combine multiple optical signals at different channel wavelengths. A plurality of laser array thermal shields are thermally coupled to a temperature control device, such as a thermoelectric cooler (TEC), and thermally shield the respective lasers in the laser array in separate thermally shielded compartments. Each of the lasers may also be individually thermally controlled to provide a desired wavelength, for example, using a heater and/or cooler located in each thermally shielded compartment. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.