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Optical Filters for Telecom

Build high-performance coarse wavelength division multiplexing (CWDM) and dense wavelength division multiplexing (DWDM) modules with these state-of-the-art filters.

Coherent leverages proprietary thin-film deposition process, including state-of-the-art layer thickness control, to produce the industry’s best telecom filter solutions for 200 GHz/100 GHz/50 GHz WDM components.

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CWDM/DWDM Filters Specifications

Select from these CWDM/DWDM filters, or contact us about custom products including high-performance skip filters, gain-flattening filters, and dual-band filters.

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Optical Filters for Telecom

Parameters	CWDM Filter	DWDM Filter
Operating Wavelength Range	1250 nm to 1620 nm	1250 to 1620 nm
Typical Bandwidth	13 nm to 15 nm	< 0.5 nm
Channel Spacing	20 nm	50/100/200 GHz
Central Wavelength	1271/1291/1311 nm... to 1611 nm	1520.25/1521.02/1521.79 nm… to 1577.03 nm
Transmission / Reflection Insertion Loss	< 0.35 dB
Transmission / Reflection Ripple	< 0.25 dB
Transmission Isolation for Adjacent Channel	> 30 dB
Transmission Isolation for Non-adjacent Channel	> 45 dB
Reflection Isolation	> 13 dB
Temperature Shift	< 2 pm/°C
Incidence Medium	Air
AOI	1.8 degree for 3-port coupler 13.5 degree for CCWDM	1.8 degree for 3-port coupler
Wedge	0.25 degree
Typical Size	1.2 x 1.2 x 1.0 mm, 1.4 x 1.4 x 1.0 mm	1.4 x 1.4 x 1.0 mm

관련 제품

C-Lens & D-Lens

Build low insertion loss fiberoptic components – including switches, isolators, circulators, DWDMs, fiber amplifiers, and more – with Coherent miniaturized optics.

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Beamsplitter Cubes

Split and recombine laser beams or broadband sources with our beamsplitter cubes that offer both polarization insensitivity and high throughput.

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Polarizing Beamsplitter Cubes

Split high-power laser beams by polarization using these efficient cube beamsplitters with extinction ratios >1000:1, which do not produce offset ghost beams.

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Birefringent Wedges

Split or combine polarization-multiplexed optical signals in telecom systems with miniature birefringent wedges offering both high extinction ratio and transmission.

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