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A low polarization sensitivity all-fiber wavelength measurement system

Journal Article


Abstract


  • A low polarization-sensitive all-fiber wavelength measurement system using a twisted macro-bend fiber edge filter together with polarization-insensitive (PI) 3-dB coupler is presented. Eliminating the polarization-dependent loss (PDL) is essential when macro-bending single-mode fiber is utilized as an edge filter. A new bending configuration to eliminate the PDL of a fiber edge filter is proposed in this letter by twisting the fiber by 90° between two bending sections with equal length. The PDL of this configuration retains a low value even while the bending length is increased to achieve a steeper response for the edge filter. This configuration together with a PI 3-dB coupler makes the system to have very low polarization sensitivity and as a result high wavelength accuracy can be achieved. © 2008 IEEE.

Publication Date


  • 2008

Citation


  • Rajan, G., Semenova, Y., Farrell, G., Wang, Q., & Wang, P. (2008). A low polarization sensitivity all-fiber wavelength measurement system. IEEE Photonics Technology Letters, 20(17), 1464-1466. doi:10.1109/LPT.2008.927899

Scopus Eid


  • 2-s2.0-70449332934

Start Page


  • 1464

End Page


  • 1466

Volume


  • 20

Issue


  • 17

Abstract


  • A low polarization-sensitive all-fiber wavelength measurement system using a twisted macro-bend fiber edge filter together with polarization-insensitive (PI) 3-dB coupler is presented. Eliminating the polarization-dependent loss (PDL) is essential when macro-bending single-mode fiber is utilized as an edge filter. A new bending configuration to eliminate the PDL of a fiber edge filter is proposed in this letter by twisting the fiber by 90° between two bending sections with equal length. The PDL of this configuration retains a low value even while the bending length is increased to achieve a steeper response for the edge filter. This configuration together with a PI 3-dB coupler makes the system to have very low polarization sensitivity and as a result high wavelength accuracy can be achieved. © 2008 IEEE.

Publication Date


  • 2008

Citation


  • Rajan, G., Semenova, Y., Farrell, G., Wang, Q., & Wang, P. (2008). A low polarization sensitivity all-fiber wavelength measurement system. IEEE Photonics Technology Letters, 20(17), 1464-1466. doi:10.1109/LPT.2008.927899

Scopus Eid


  • 2-s2.0-70449332934

Start Page


  • 1464

End Page


  • 1466

Volume


  • 20

Issue


  • 17