1. © DIAMOND SA / 03-01 / 1 OAF Optical Attenuating Fiber technology

2. © DIAMOND SA / 03-01 / 2  Why do we use fiber optic attenuators ?  Why is the OAF technology better than the others ?  Fiber optics attenuators are used to reduce the optical performance in fiber optic networks, matching the fiber optic attenuation to the system dynamics.  The following highlights are featured for these attenuators based on specially doped graded index attenuating fiber:  Precise attenuation  Suitable for high power applications up to 20 dBm  Many standard nominal values available  High repeatability performance over service life  Long life  Compact, durable and solid construction compatible with standard connector systems (PC or APC)  Wavelength independent attenuation for SM (1260-1360 and 1460- 1580nm) Some questions about this subject came spontaneously?

3. © DIAMOND SA / 03-01 / 3 OAF E-2000 TM  Wavelength independent  Large choice of nominal attenuation levels (2 up to 30dB)  PC and APC version available  Removable, rotation keyed ferrule for easy cleaning  better repeatability  long life  Direct connection in front of the receiver  Compact, durable and economical construction The in line fixed attenuator of the E-2000TM family brings together the benefits of an attenuation performed by a special doped fiber and the innovative features of the E- 2000™ connector system

4. © DIAMOND SA / 03-01 / 4 OAF F-3000 TM  Wavelength independent  Large choice of nominal attenuation levels (2 up to 30dB)  PC and APC version available  Removable, rotation keyed ferrule for easy cleaning  better repeatability  long life  Direct connection in front of the receiver  Compact, durable and economical construction The in line fixed attenuator of the F-3000™ family brings together the benefits of an attenuation performed by a special doped fiber and the innovative features of the F- 3000™ connector system

5. © DIAMOND SA / 03-01 / 5 OAF SC The single mode in line fixed attenuator of the standard SC family  Wavelength independent  Large choice of nominal attenuation levels (2 up to 30 dB)  PC and APC version available  Anti-rotation keyed ferrule  high quality connection  better repeatability  push-pull connection system

6. © DIAMOND SA / 03-01 / 6 OAF FC The single mode in line fixed attenuator of the FC family  Wavelength independent  Large choice of nominal attenuation levels (2 up to 30dB)  PC and APC version available  Anti-rotation keyed ferrule  FC-connector key of 2 and 2.14 mm diameter available in APC design

7. © DIAMOND SA / 03-01 / 7 OAF LSA (DIN) The simplified single mode in line fixed attenuator of the standard LSA (DIN) family  Wavelength independent  Only PC version available  Free moving ceramic ferrule  Large choice of nominal attenuation levels (5 up to 30dB)

8. © DIAMOND SA / 03-01 / 8 OAF ST single mode and OAS MM The single mode and Multimode in line fixed attenuator of the standard ST family  Wavelength independent for SM version  OAS MM for 850 or 1310 nm  Only PC version available  Large choice of nominal attenuation levels (5 up to 30dB)

9. © DIAMOND SA / 03-01 / 9 OAF DIAMOND The single mode in line fixed attenuator of the standard Diamond family  Wavelength independent  Only PC version available  Large choice of nominal attenuation levels (5 up to 30dB)

10. © DIAMOND SA / 03-01 / 10 OAF-PATCH The single mode in line fixed attenuator patchcord offering connector-system related high quality attenuation  Wavelength independent  Large choice of nominal attenuation levels (2 up to 30dB)  Six different connector types in PC or APC version available and “Alberino” as well  Suitable for applications in restricted places  No additional attenuation induced by modal-noise  Long life related to high quality connector repeatability