A Record High Optical Output Power Pigtailed-OSFP External Laser Source for Co-Packaged Optics

This paper describes a design and characteristics of a record high optical output power pigtailed-OSFP ELS employing an uncooled 8-channel CWDM TOSA for Co-Packaged Optics. An OSFP housing has a bigger mechanical size compared with a QSFP housing and thus an OSFP housing accept increasing power cons...

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Bibliographic Details
Main Authors: Umeta, Kohei, Sawamura, Taketsugu, Nagai, Kyoko, Kashima, Kazuhiko, Nasu, Hideyuki
Format: Conference Proceeding
Language:English
Subjects:
Atmospheric modeling
Co-Packaged Optics
CWDM4
DFB
External Laser Source
Integrated optics
MPO
Optical fibers
Optical recording
OSFP
Power demand
Temperature
Temperature measurement
TOSA
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Summary:This paper describes a design and characteristics of a record high optical output power pigtailed-OSFP ELS employing an uncooled 8-channel CWDM TOSA for Co-Packaged Optics. An OSFP housing has a bigger mechanical size compared with a QSFP housing and thus an OSFP housing accept increasing power consumption to obtain higher optical output power. Based on thermal simulations, characteristics of LD temperature and case temperature of the TOSA are anticipated with an ambient temperature of 40{}^{\circ} \mathrm{C} and an air flow rate of 3.75 CFM. The maximum LD temperature is as high as 620 \text{mA} to keep an LD temperature of \leq 65\ {}^{\circ} \mathrm{C} . To output record fiber-coupled optical power of 22 dBm per channel, a required LD bias current is \leq 550 mA, whereby power consumption and a PCE are 10.3 \mathrm{W} and 12.3%, respectively.
ISSN:2475-8418
DOI:10.1109/ICSJ59341.2023.10339634