Programmable coupler ladder based on lithium niobate Y-junction reflector

Jianxiao Chen, Tetsuya Kawanishi, Kaoru Higuma, Satoshi Shinada, William S C Chang, Masayuki Izutsu, Paul K L Yu

Research output: Contribution to journalArticle

Abstract

This paper presents a proposal for a novel integrated tunable coupler device called programmable coupler ladder, based on Titanium diffused lithium niobate waveguide and Y-junction reflector. Unlike the traditional serial to parallel converter, the coupler ladder sorts the output bits in the time axis using a built-in delay waveguide. With a proper control signal it can perform signal processing at the bit level. It also can generate coherent multi-channel outputs with theoretically arbitrary amplitude and phase from continuous input light source. Its application in optical microwave beam forming is briefly described. The key component, built-in delay line based on Y-junction reflector, has been experimentally verified via a loop resonator structure, 1 dB loss is found for each Y-junction reflector, which enables a practical coupler ladder. The loop itself is also an important device for optical signal processing.

Original languageEnglish
Pages (from-to)379-383
Number of pages5
JournalIEICE Transactions on Electronics
VolumeE88-C
Issue number3
DOIs
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

Ladders
Lithium
Waveguides
Optical signal processing
Electric delay lines
Titanium
Light sources
Resonators
Signal processing
Microwaves
lithium niobate

Keywords

  • Coupler ladder
  • Lithium niobate
  • Loop resonator
  • Splitter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Chen, J., Kawanishi, T., Higuma, K., Shinada, S., Chang, W. S. C., Izutsu, M., & Yu, P. K. L. (2005). Programmable coupler ladder based on lithium niobate Y-junction reflector. IEICE Transactions on Electronics, E88-C(3), 379-383. https://doi.org/10.1093/ietele/e88-c.3.379

Programmable coupler ladder based on lithium niobate Y-junction reflector. / Chen, Jianxiao; Kawanishi, Tetsuya; Higuma, Kaoru; Shinada, Satoshi; Chang, William S C; Izutsu, Masayuki; Yu, Paul K L.

In: IEICE Transactions on Electronics, Vol. E88-C, No. 3, 2005, p. 379-383.

Research output: Contribution to journalArticle

Chen, J, Kawanishi, T, Higuma, K, Shinada, S, Chang, WSC, Izutsu, M & Yu, PKL 2005, 'Programmable coupler ladder based on lithium niobate Y-junction reflector', IEICE Transactions on Electronics, vol. E88-C, no. 3, pp. 379-383. https://doi.org/10.1093/ietele/e88-c.3.379
Chen, Jianxiao ; Kawanishi, Tetsuya ; Higuma, Kaoru ; Shinada, Satoshi ; Chang, William S C ; Izutsu, Masayuki ; Yu, Paul K L. / Programmable coupler ladder based on lithium niobate Y-junction reflector. In: IEICE Transactions on Electronics. 2005 ; Vol. E88-C, No. 3. pp. 379-383.
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