Fiber Laser Bandpass Filter

A bandpass filter is characterized by a defined passband onto which cut off regions are connected on both sides.

Fiber laser bandpass filter.

It is used to block out unwanted noise signals in edfas or fiber laser systems. The bandpass can be varied from 2 nm to 18 nm and the center wavelength can be tuned from 1525 nm to 1560 nm. This advantage is accompanied by a loss of transmission of approximately 20 30. Our laser line bandpass filters cover most of the common laser lines and feature excellent out of band blocking of less than 0 01 10 4.

The bandpass filter is a micro optics device based on environmentally stable thin film filter technology. Sensitivity to angle of incidence. Applications include sideband noise suppression in erbium doped fiber amplifiers edfas and for use in tunable laser transmission systems. It is used to block out unwanted noise signals in edfas and fiber laser systems.

The highly reflective side of the filter should generally face the source minimizing the thermal load on the blocking glass and epoxies. Tunable bandpass tunable wavelength filter modules tbtfm enable simultaneously varying the bandpass and center wavelength of the filter. Narrow 0 8 nm bandwidth. Unblocked standard laser line filters blocking area with 0 85 1 15 x cwl have a transmission of 60 85.

It consists of two multi cavity thin film filters with 18 nm bandpass with very steep walls. The components are characterized with high isolation low insertion loss high return loss excellent environmental stability and high power handling capability. Bandpass and laser line filters are available in the visible near ir and infrared ranges. All standard laser line filters can also be delivered blocked.

Bandpass imaging filter in ball lens is simple and widely tunable based on frustrated total internal reflection a tunable filter is compact has a large range and can be easily designed into optical systems. Our bandpass filters feature a dielectric stack fabry pérot interferometer design. Manually tunable optical filter dicon s manually tunable optical bandpass filter is used to manually adjust the center wavelength of a narrow optical bandpass filter over a 30nm wavelength range centered at 1550nm. Adjustment of the center wavelength is accomplished by tilting the bandpass filter with a high precision micrometer.

Newport s tunable bandpass fiber optic filter is used to adjust the center wavelength of a narrow passband within a 30 nm range around 1550 nm.