Cisco, Transceiver, models:

DWDM-X2 Series	Installation Notes
DWDM-XENPAK Series	Installation Notes
DWDM-XFP Series	Installation Notes
FM1200 Volo	Installation And Configuration Manual
FM3200 Base	Installation And Configuration Manual
FM3500 Endo	Installation And Configuration Manual
FM4200	Installation And Configuration Manual
MFEBX1	Quick Start Manual
MGBLH1 - Gigabit LH Mini-GBIC SFP Transceiver	User Manual
QSFP+ Series	Installation Note