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XTM-50 - Tunable filter with adjustable bandwidth

With the XTM-50 both center wavelength and bandwidth can be independently adjusted. It is manually controlled and versions are available covering all the key telecom wavelengths from 1260 nm to1650 nm and bandwidths from 32 pm (4 GHz) to 5 nm.

Key features

Adjustable bandwidth flat-top filter
Ultra-sharp filter edges
High isolation
High accuracy and repeatability
200 nm wavelength range
Narrowest Filter – Highest Selectivity


Channel selection for bit error rate testing
Analysis of sub-band of complex modulation formats
Channel spacing reduction
WDM-PON, DWDM systems testing
Amplification analysis
Cascaded ROADM emulation
Active component and module testing
Transponders testing


The XTM-50 tunable filter is the perfect tool for laboratory use. Its optical performance is identical to the XTA-50 as it is based on the same optical system. The wavelength tuning and bandwidth adjustment are manual through micrometers.

All versions of the XTA-50 have their manual equivalent in the XTM-50 family.