Cisco ISR G2 platform is EoL now, so it is not in TMG matrix present.EoL 3900
The EHWIC EHWIC-1GE-SFP-CU supported GLC-LH-SMD, GLC-SX-MMD, GLC-T, so C3900-SPE100/K9 had support at least for the same SFPs. You can also look into 2900 HW install guide...