OPTICAL FILTERS FOR COMMUNICATIONS APPLICATIONS

PublishTime：2024-03-11

■Applications ●For telecom applications, thin-film filters may be incorporated into fiber-optic devices in several ways. One common packaging concept is to use "three-port couplers." Using this approach, light from the input port fiber is collimated by the first lens and directed onto the thin-film filter. Light reflected by the filter travels back into the lens and is focused into an output fiber, while light that passes the filter is collected by a second lens and is focused into another output fiber. A multiple-wavelength multiplexer/demultiplexer can be constructed by connecting a series of three-port couplers in cascade. Another packaging approach to yield a smaller package size is to use compact CWDM (CCWDM) modules. CCWDMs use free-space technology rather than a cascading method. Collimators and filters are bonded on a common substrate, using an appropriate epoxy and curing process. Rigorous control of manufacturing processes is demanded to manufacture CCWDM modules. ●Coherent leverages the proprietary thin-film deposition process to produce the industry’s best telecom filter solutions, with state-of-the-art layer thickness control.

Brand of Product：	COHERENT
Part#：
Product Category：	OPTICAL FILTERS、CWDM Filter、DWDM Filter、CWDM4 Filter、LAN-WDM Filter、Coarse Wavelength Division Multiplexing Filters、Dense Wavelength Division Multiplexing Filters、FILTER SUBASSEMBLIES、datacom filters More
Application：	[ COMMUNICATIONS APPLICATIONS ][ DATACOM ][ Telecom ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	CFP4;QSFP28
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2022/11/10
Version Number：
Data Encoding：
Data Size：	928 KB

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