Exhibit 10.40

Summary of the principal terms of the contract for state-owned construction land
use
right assignment between Wuxi Bureau of Land and Resource and Finisar Optical
Communications Technology (Wuxi) Co., Ltd.
(Original document in Chinese)

Beginning on March 4, 2017, Finisar Optical Communications Technology (Wuxi)
Co., Ltd., as Assignee, entered into a contract for state-owned construction
land use right assignment with the Wuxi Bureau of Land and Resource, as
Assignor, regarding property located at South of Wudu Road and East of Hong Ming
Company, Wuxi, Jiangsu, People's Republic of China. The initial term of the
agreement is for 50 years, starting on March 4, 2017. The agreement allows
Assignee to make application to the Assignor to renew or extend the agreement
not less than one year prior to the expiration of the initial term. The total
assigned space is 26,353.5 square meters. Assignee paid a one time assignment
fee of CNY 13,840,000.

The ownership of the assigned land belongs to the People's Republic of China.
Assignee has rights of occupancy, use, earnings and disposal in accordance with
laws and shall be entitled to construct buildings, structures and their
auxiliary facilities by making use of the land.

The Agreement also contains provisions covering transfer, ease and mortgage of
the State-Owned Construction Land Use Right, expiration of use duration, force
majeure, liabilities for breach of the contract, governing laws, and dispute
resolution.