Athermal birefringent solid etalon for 25 GHz-spacing built-in wavelength monitor

Imaki, Masaharu; Mikami, Yoshiki; Satô, Masayoshi; Nishimura, Y.; Adachi, Akihiro; Hirano, Y.

doi:10.1109/ofc.2003.316130

Cited by 1 publication

(2 citation statements)

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“…Moreover, the wave plate after the isolator can be properly designed to compensate the thermal drift of the isolator response. Similar schemes based on birefringent crystals have been proposed for making wavelength filters [6]. Thus the proposed module can be made to be thermally stable.…”

Section: (B) the Isolator Can Be One-stagementioning

confidence: 94%

“…The tuning curve of a TLS might change due to aging or temperature variation, which can give rise to mode hopping and incomplete-tuning problems in tuning a TLS [5]. The wavelength of a TLS can be locked to a DWDM wavelength grid, specified by the International Telecommunication Union (ITU), by use of an FP etalon [5][6][7][8]. However, it is difficult to detect mode hopping and incomplete tuning with a single etalon because of its periodic spectral response.…”

Section: Introductionmentioning

confidence: 99%

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Optical-isolator-based modules for monitoring DWDM tunable lasers

Yang

Lee

2004

J. Opt. Netw.

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Simultaneous monitoring of power, wavelength, and channel number for a tunable laser is demonstrated by use of a combination of an optical isolator, an etalon, a polarizer, and photodiodes. The mode hopping and incomplete-tuning problems that might arise in tuning the laser can be detected with the proposed approach. The spectral response of the monitoring module can be adjusted to match the wavelength-tuning range. The spectral adjustment can be performed by rotating the input polarization or the output polarizer. It can also be tuned by rotating the second stage if a two-stage isolator is used. We demonstrate experimentally the feasibility of this approach by use of discrete fiber-pigtailed components.

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Section: (B) the Isolator Can Be One-stagementioning

confidence: 94%