How to distinguish the wave band from the color of the light module?

1. The color of the ring corresponding to the commonly used band

850Nm -Black Ring Ring

1310Nm -Blue Ring Ring

1490nm -purple pull ring

1550nm -Yellow Pull Ring

2. CWDM light module corresponding to the pull ring color of each band

1470nm -gray pull ring

1490nm -purple pull ring

1510Nm -Blue Ring Ring

1530nm -green pull ring

1550nm -Yellow Pull Ring

1570nm -Orange Ring Ring

1590nm -red tension ring

1610Nm -Brown Pull Ring