This article provides a CLI command to identify the vendor of the optics, as this information is not displayed in the show chassis hardware detail output.
CLI Command >show chassis pic pic-slot <pic-slot-number> fpc-slot <fpc-slot-number> provides the vendor details.
Sample O/p fro lab device:
user@host> show chassis pic fpc-slot 2 pic-slot 0 PIC fpc slot 2 pic slot 0 information: Type 10x 1GE(LAN), 1000 BASE ASIC type H chip State Online PIC version 1.1 Uptime 1 day, 50 minutes, 58 seconds PIC Port Information: Port Cable Xcvr Xcvr Vendor Number Type Vendor Name Part Number 0 GIGE 1000EX FINISAR CORP. FTRJ8519P1BNL-J3 1 GIGE 1000EX FINISAR CORP. FTRJ-8519-7D-JUN
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/command/show-chassis-pic.html