1. Ciena Corporation
2. Cisco Systems Inc
3. Eci Telecom
4. Fujitsu Limited
5. Huawei Technologies Ltd
6. Infinera Corporation
7. Nec Corporation
8. Nokia Corporation
9. Telefonaktiebolaget Lm Ericsson (Ericsson)
10. Zte Corporation
11. Adva Optical Networking
12. Carl Zeiss Meditec
13. Zygo Corporation
14. Vision Engineering Ltd