1. Cisco Systems Inc.
2. Finisar Corporation (Acquired by II-VI Incorporated)
3. Huawei Technologies Co. Ltd.
4. Lumentum Holdings Inc.
5. Broadcom Inc.
6. Fujitsu Optical Components Ltd.
7. Sumitomo Electric Industries
Ltd.
8. NeoPhotonics Corporation
9. Accelink Technologies Co. Ltd.
10. Innolight Technology Corporation
11. Source Photonics Inc.
12. Oclaro Inc. (Acquired by Lumentum Holdings Inc.)
13. Ciena Corporation